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I bought a used N1 on eBay. I totally wasn't even thinking about the fact that there are different models of the phone for different carriers. Turns out I have the T-Mobile N1, but I have AT&T service currently.
I assume that there is no kind of mod/firmware to get it to use AT&T 3G, and that it's the hardware that limits me to T-Mo? Probably more than some custom firmware or something could fix?
That kind of sucks, if so. I doubt anyone would have an AT&T model, looking for a T-Mo model, eh?
Thanks for any help, if it's even possible..
Have you looked at the seller's return policy?
No returns accepted, as stated on the item page.
I can live with it (in remorse)..
The seller didn't mention what model it was at all, either.
I don't suppose Verizon uses the same bands as T-Mo?
austinm08 said:
No returns accepted, as stated on the item page.
I can live with it (in remorse)..
The seller didn't mention what model it was at all, either.
I don't suppose Verizon uses the same bands as T-Mo?
Click to expand...
Click to collapse
No, they don't. T-Mobile and Verizon use totally different radio technologies.
Go onto the Marketplace forum on XDA, and trade/sell it through there.
Put your sim card in it
Sent from my Nexus One using XDA App
Post it for sale locally on craigslist to finance a unit with the AT&T radio.
Sent from my Nexus One using XDA App
Also if you have trouble locating the AT&T compatible N1, you may also consider the Telus version of HTC Desire. Largely the same hardware, AT&T bands, but no Euro 2100 band.
Possible bonus: AT&T does not know the IMEI of Telus Androids, and might not force you to a higher cost smart phone data plan.
Thanks for your input, guys.
I'll try first to sell it locally via Craigslist.
I really think that it will be much more difficult
since they discontinued the Nexus One, and provided it through the developers only,
it has always been the T-Mobile version which is quite disappointing....
the AT&T version seem to just disappear from manufacturing all together
point I am trying to make is that it the AT&T version should be much rarer and possibly worth more on the market since there are less quantities of it
it sucks my friend I feel for you...
How is the T-Mobile N1 different from AT&T model?
Sent from my Nexus One using XDA App
Different radio frequencies and limited availability. Otherwise identical.
Sent from my Nexus One using XDA App
I've done the exact opposite...got myself an ATT N1 while on tmobile...hahaha
hahah. I've since sold my T-Mo N1 on eBay and bought an AT&T N1 from Craigslist.. got a sweet deal, too!
wait wait a sec
If you Unlock the S off on the nexus one Tmobile. You can use a At&t sm card with out a problem. I UnloCked the S off ON the mytouch 4g AND IT works on At&t s network. HMMMM. Wondering if it works.
Sir0 said:
If you Unlock the S off on the nexus one Tmobile. You can use a At&t sm card with out a problem. I UnloCked the S off ON the mytouch 4g AND IT works on At&t s network. HMMMM. Wondering if it works.
Click to expand...
Click to collapse
Yes, it will function on the network. The issue is that the radio hardware is built for specific frequencies, which differ between the T-Mobile and AT&T models.
You can use one phone on the other's network just fine as a phone, but you will be limited to 2G data speeds, as AT&T uses 850/1900MHz for their 3G data and T-Mobile uses 900 1700/2100MHz.
Umm, nobody uses 900 MHz for cellular in North America... that spectrum is not allocated for that purpose here.
Sent from my Nexus One using XDA App
cmstlist said:
Umm, nobody uses 900 MHz for cellular in North America... that spectrum is not allocated for that purpose here.
Sent from my Nexus One using XDA App
Click to expand...
Click to collapse
You're right, my apologies. The fact of the matter (that the hardware is incompatible between the AT&T and T-Mobile networks) remains intact though.
Correct 3G data frequency information, as best I can make it out:
AT&T uses 850MHz and 1900MHz.
T-Mobile uses 1700MHz and 2100MHz.
900MHz and 2100MHz are used primarily in Europe; a phone made for European markets will have a better chance of being fully compatible with T-Mobile's network in the states based on sharing the 2100MHz band.
Closer but still not quite
Read up on the AWS band. European phones will not get T-Mobile 3G at all without 1700.
But in the specific case of the Nexus One, models sold in Europe do have AWS.
Sent from my Nexus One using XDA App
Dope
I just got the mytouch 4g and i wanted to sell my nexus one. But i wanted to double check and see if i can sell it to someone on the at&t network. I currently have tmobile. I thought the S-Off was to completely unlock the phone. So u can switch between carriers. Didnt know the frequency would be different. thank guyz. Damn u HTC.
austinm08 said:
I bought a used N1 on eBay. I totally wasn't even thinking about the fact that there are different models of the phone for different carriers. Turns out I have the T-Mobile N1, but I have AT&T service currently.
I assume that there is no kind of mod/firmware to get it to use AT&T 3G, and that it's the hardware that limits me to T-Mo? Probably more than some custom firmware or something could fix?
That kind of sucks, if so. I doubt anyone would have an AT&T model, looking for a T-Mo model, eh?
Thanks for any help, if it's even possible..
Click to expand...
Click to collapse
What kind of shape is your T-Mobile N1 in?
I'm actually in the process of switching to T-Mobile, and I have an ATT model that I would potentially be interested in trading, but it's definitely not mint.
Hi @ all
I want to get this phone, but now it is only available in the US, not in europe....
i think, like the most of the htcs, the shift won't be selled in europe....
Can anybody tell me who sells this phone without a deal of Sprint?
(onlinestore prefered)
i already looked for it at amazon, but the only offer i found was with deal of sprint....
thanking you in anticipation!
Just try Best Buy! App is available in the market
Sent from my GT-I9000 using XDA App
ipalermo said:
Just try Best Buy! App is available in the market
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
i just found their hp, but also only with plan of sprint
You can buy any phone without a contract. That doesn't mean ur carrier will support it tho. Just expect to pay full price on it
sent from my evo shift
If you're planning on using the phone in Europe be careful. Most providers in Europe are gsm which sprint is cdma. Only a couple countries in Europe/middle east operate with cdma towers. Don't quote me but I believe Israel and areas around there use cdma but then again you have know the frequencies also to make sure its the same cdma. Kinda how it is with sprint and Verizon. Cdma but different frequencies. 800,900,1800,1900...etc etc. Correct me if I'm wrong if anyone has any more insite on this topic.
Sent from my PG06100 using XDA App
why not get the desire z?
pretty much the same phone
onefasttreopro said:
If you're planning on using the phone in Europe be careful. Most providers in Europe are gsm which sprint is cdma. Only a couple countries in Europe/middle east operate with cdma towers. Don't quote me but I believe Israel and areas around there use cdma but then again you have know the frequencies also to make sure its the same cdma. Kinda how it is with sprint and Verizon. Cdma but different frequencies. 800,900,1800,1900...etc etc. Correct me if I'm wrong if anyone has any more insite on this topic.
Sent from my PG06100 using XDA App
Click to expand...
Click to collapse
Some countries in South America use different frequencies.
Israel, parts of Korea, parts of Japan, parts of China, parts of India, and some of the small islands in that area use the same CDMA frequencies. There aren't many, really.
onefasttreopro said:
If you're planning on using the phone in Europe be careful. Most providers in Europe are gsm which sprint is cdma. Only a couple countries in Europe/middle east operate with cdma towers. Don't quote me but I believe Israel and areas around there use cdma but then again you have know the frequencies also to make sure its the same cdma. Kinda how it is with sprint and Verizon. Cdma but different frequencies. 800,900,1800,1900...etc etc. Correct me if I'm wrong if anyone has any more insite on this topic.
Sent from my PG06100 using XDA App
Click to expand...
Click to collapse
damn, i didn't thought about this.....
you are right, CDMA is not supported in europe.
i read they started a test with CDMA in germany, but nothing more.
either i have to wait till a gsm-version is available (i didn't think so) or have to be satisfied with the desire z.....
Thank u guys for this "short" discussion!
Letstalk.com 89$ no tax with 2 year contract
sent frm perma rooted evo shi(f)t via XDA app
no problem, and yes the desire z would probably be your best bet if you're looking for a gsm comparable model of phone to the evo shift. good luck.
Sorry if this has been answered but I'm on the xda app and can't search. I'm thinking about getting this phone and unlocking it to work on T-Mobiles network. How cross compatible is it? Will it work with the T-Mobile "4G"?
Sent from my HD2 using XDA App
Lint6 said:
Sorry if this has been answered but I'm on the xda app and can't search. I'm thinking about getting this phone and unlocking it to work on T-Mobiles network. How cross compatible is it? Will it work with the T-Mobile "4G"?
Sent from my HD2 using XDA App
Click to expand...
Click to collapse
Nope, you will only get 2G (EDGE).
t-mobile and at&t use different 3G frequencies, so if you unlock it you will only get EDGE speeds. Not worthy IMO, you have lots of options in your country, i would recommend to wait for the samsung galaxy s II phone.
Will work on the network but data will be at Edge speeds, not 4G.
Sent from my GT-I9000 using XDA App
Just get the new nexus s and enjoy 2.3.3 and new nfc features and 3 axis gyroscope for wii like control over games and updates first and super Smiled screen lol
Sent from my Nexus S using XDA App
nucentury08 said:
Just get the new nexus s and enjoy 2.3.3 and new nfc features and 3 axis gyroscope for wii like control over games and updates first and super Smiled screen lol
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
On the new Nexus S - if you run out of internal storage - what size memory card can you add? Oh, wait they left off the SD card slot on that model. But those super AMOLED screens are really easy on the battery right? Oh wait, if the screen is black they use less juice but not otherwise.
Sorry, had to pick on you. Suffered with the captivate for 8 months..... yeah i drank the Koolaid - now i know better - but samsung sure can spin it.
alphadog00 said:
On the new Nexus S - if you run out of internal storage - what size memory card can you add? Oh, wait they left off the SD card slot on that model. But those super AMOLED screens are really easy on the battery right? Oh wait, if the screen is black they use less juice but not otherwise.
Sorry, had to pick on you. Suffered with the captivate for 8 months..... yeah i drank the Koolaid - now i know better - but samsung sure can spin it.
Click to expand...
Click to collapse
Just ignore him, hes been trolling all over the Atrix forums. The gyroscope in his phone apparently makes his keyboard so fast that he cant use punctuation.
Unfortunately NOT ...
Inspite every where they said you'll only get EDGE , I Saw one guy saying he got 4G on simple mobile which uses the TMO towers sometimes (both have same frequencies)!!!
I bought the ATRIX on TMO and for 2 days now only EDGE
nuoten18 said:
Unfortunately NOT ...
Inspite every where they said you'll only get EDGE , I Saw one guy saying he got 4G on simple mobile which uses the TMO towers sometimes (both have same frequencies)!!!
I bought the ATRIX on TMO and for 2 days now only EDGE
Click to expand...
Click to collapse
nowhere do they say you can use an att phone on t mobile 3G. it's been known for years that their frequencies are different and incompatible. you just didn't do your homework before purchasing.
I knew 99% it won't work but i took the challenge anyway ..
dLo GSR said:
nowhere do they say you can use an att phone on t mobile 3G. it's been known for years that their frequencies are different and incompatible. you just didn't do your homework before purchasing.
Click to expand...
Click to collapse
don't judge me ... I did my homework
... Just kinding
Actually make search for (atrix on t mobile) you'll find another disscussion about the same topic and will find the guy that I menstioned before ...
As New user I'm not allowed to post links but that what he said exactly
"Yo I got it to work with simple mobile with their 4g. Just go to gsmhosting forums and buy a code from their advertised sites. They email it to you in 5 minutes, just input imei and that it."
nuoten18 said:
Actually make search for (atrix on t mobile) you'll find another disscussion about the same topic and will find the guy that I menstioned before ...
As New user I'm not allowed to post links but that what he said exactly
"Yo I got it to work with simple mobile with their 4g. Just go to gsmhosting forums and buy a code from their advertised sites. They email it to you in 5 minutes, just input imei and that it."
Click to expand...
Click to collapse
That code process is to unlock the phone to enable it to be used with networks other than AT&T. But that doesn't get you data speed any faster than 2G/Edge using an Atrix on T-Mobile's network.
I'm a little confused here. You guys are saying that the Atrix will only get 2G/EDGE speeds on TMobile because the frequencies are different.
I am currently using the Nexus One.. how is it that I'm getting 3G speeds with a phone that is compatible with both AT&T and TMobile then??
Doesnt this mean that the Atrix should be able to get 3G speeds as long as it has the appropriate software? or am I not understanding something..
There are 2 kinds of nexus ones.. one with AWS bands (tmobile) and one with the regular 850/1900 (ATT). That's why you see them work on both tmobile and att. But a single device won't work on both bands.
It is a hardware issue. No software flashing will be able to fix it. If you bought the wrong one then you're stuck with it.
Sent from my Nexus S using Tapatalk
nuoten18 said:
don't judge me ... I did my homework
... Just kinding
Actually make search for (atrix on t mobile) you'll find another disscussion about the same topic and will find the guy that I menstioned before ...
As New user I'm not allowed to post links but that what he said exactly
"Yo I got it to work with simple mobile with their 4g. Just go to gsmhosting forums and buy a code from their advertised sites. They email it to you in 5 minutes, just input imei and that it."
Click to expand...
Click to collapse
False. There's not a chance in the world that is true. T-Mo USA and AT&T use mutually exclusive bands. No carrier-branded phones carry both bands. The only modern phone that carries bands necessary for 3/4G on either network would be the upcoming, not-for-sale/developer-only Nokia N950.
deduction said:
False. There's not a chance in the world that is true. T-Mo USA and AT&T use mutually exclusive bands. No carrier-branded phones carry both bands. The only modern phone that carries bands necessary for 3/4G on either network would be the upcoming, not-for-sale/developer-only Nokia N950.
Click to expand...
Click to collapse
The Nokia N8 and E7 also have the 3G frequencies necessary for both At&t and T-mobile, as well as Europe/Asia (850/900/1700/1900/2100). However, I agree with you that no At&t/T-mobile branded device carries all the needed bands.
http://www.amazon.com/Nokia-Touchscreen-Featuring-Navigation-Camera-U-S/dp/B003ZX7RL4
http://www.amazon.com/Nokia-Unlocked-Touchscreen-Navigation-Camera-U-S/dp/B0046LTU9G
Vibrant can be used on T-Mo and AT&T as well
bimmerboii said:
There are 2 kinds of nexus ones.. one with AWS bands (tmobile) and one with the regular 850/1900 (ATT). That's why you see them work on both tmobile and att. But a single device won't work on both bands.
It is a hardware issue. No software flashing will be able to fix it. If you bought the wrong one then you're stuck with it.
Sent from my Nexus S using Tapatalk
Click to expand...
Click to collapse
Ah, I see. I didnt realize that there are 2 types of the Nexus One.
I had assumed that since they are not branded by any carriers that they were all the same device.
Thanks
I was really hoping to have my TZones internet plan, which runs at 3G speeds on the Nexus, run on an unlocked Atrix but that doesn't look possible.
Are there any phones newer than the Nexus One that will work with Tmobile 3G and are unbranded by Tmobile?
The branded Tmo android phones lock out my Tzones.
Enforcerman said:
Ah, I see. I didnt realize that there are 2 types of the Nexus One.
I had assumed that since they are not branded by any carriers that they were all the same device.
Thanks
I was really hoping to have my TZones internet plan, which runs at 3G speeds on the Nexus, run on an unlocked Atrix but that doesn't look possible.
Are there any phones newer than the Nexus One that will work with Tmobile 3G and are unbranded by Tmobile?
The branded Tmo android phones lock out my Tzones.
Click to expand...
Click to collapse
Here's a list of phones that will work with tmobile 3G. Take your pick. You may have to source it from somewhere else if you wish to buy it unlocked and unbranded.
The Nexus S is unlocked and unbranded even if you get it from tmobile. But since you are coming from the Nexus One, it is up to you if its worth the upgrade. Other than the Nexus S, have a look at dual core phones.
http://www.gsmarena.com/results.php...nes=0&sColor=&StandBy=0&TalkTime=0&sFreeText=
Atrix on t-mobile
i am currently running atrix 4g on system version 4.5.141 and android version 2.3.6.. I am rooted and have and unlocked boot loader. I also got the unlock code for my phone and it was successful and i am now running T-mobile sim chip i am only getting the Edge .. I have a thought as if you could change the phone frequency settings with sqlite editor i mean if you can disable the entitlement_check to enable theathering with AT&T's 2gb plan then we should be able to figure out how to change the frequency ratings of the phone to be able to run on t-mobiles 4g ... I wish that someone with a little more Knowledge could help out with this..
I plan to sell my Epic to a friend who travels and spends a lot of time in Europe (the UK) and India. I want to make sure I do everything so the phone works in those places outside the US. I have been reading mixed answers about whether the CDMA technology will work in Europe and India. Could someone with experience and knowledge about this topic comment?
Sent from my SPH-D700 using XDA App
It might work. You'll have to call sprint and ask if they have service there. They'll probably refer you to this other company that sells world phones and ridiculous 2 dollar incoming and 3 dollar outgoing per minute plans. That's what they did for me when I asked about Afghanistan
Sent from my SPH-D700 using XDA Premium App
Most other countries use gsm. That's att biggest advantage over any of these other carriers. So slim possibility for cdma depending on where your going.
Sent from my SPH-D700 using XDA App
I think there is CDMA in India, cuz the old miui dev lives in India and has Airtel and used our epic on that and has since gotten an Evo 3D. IDK about Europe though. If you wanna talk to him, PM ahmgsk
incisivekeith said:
I plan to sell my Epic to a friend who travels and spends a lot of time in Europe (the UK) and India. I want to make sure I do everything so the phone works in those places outside the US. I have been reading mixed answers about whether the CDMA technology will work in Europe and India. Could someone with experience and knowledge about this topic comment?
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
There is plenty of cdma coverage in India. Only Eastern Europe has CDMA. However getting to work is no cakewalk and could permabrick your phone (all sorts of QPST nastiness).
Personally, I would just buy a used Captivate on craigslist for $100, then unlock it yourself and use that with a local carrier. It's less messy (phone wise, GSM only requires you to pop in a sim) and really isn't that much of an expense in the grand scheme of things.
lynyrd65 said:
There is plenty of cdma coverage in India. Only Eastern Europe has CDMA. However getting to work is no cakewalk and could permabrick your phone (all sorts of QPST nastiness).
Personally, I would just buy a used Captivate on craigslist for $100, then unlock it yourself and use that with a local carrier. It's less messy (phone wise, GSM only requires you to pop in a sim) and really isn't that much of an expense in the grand scheme of things.
Click to expand...
Click to collapse
I second this. Also if your friend doesn't need data then find a friend who has a an old tm/att razor they will give him and he is good to go.
sent from "The Other Woman"
Will work in India, not the UK
As noted, there's lots of CDMA in India. I just used my Epic there last month. But the UK is out of the question as there's no CDMA there in the frequency bands that Sprint uses.
All the other options to try and buy GSM phones are not something I can use, as I am trying to sell my friend my phone, an Epic bought and used in the US, so I can move on to another phone and use that money. The question was whether this phone can be used in India and the UK. Some of you said you have used it in India. Did data and everything work? How did you get it to work? I will also pm ahmgsk, the dev in India, but I would appreciate your input, too.
Sent from my SPH-D700 using XDA App
It does not work in europe which is gsm but it does work in india on rcdma provided you know someone who can get the meid registered in their database, I am using it on rcdma.
incisivekeith said:
All the other options to try and buy GSM phones are not something I can use, as I am trying to sell my friend my phone, an Epic bought and used in the US, so I can move on to another phone and use that money. The question was whether this phone can be used in India and the UK. Some of you said you have used it in India. Did data and everything work? How did you get it to work? I will also pm ahmgsk, the dev in India, but I would appreciate your input, too.
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
He or she must not be a very good friend.
Anyone who tries to do what you are describing would be tearing their hair out trying to get their phone to work.
CDMA makes it very difficult and possibly illegal to move phones from carrier to carrier.
Sent from my SPH-D700 using Tapatalk
lynyrd65 said:
He or she must not be a very good friend.
Anyone who tries to do what you are describing would be tearing their hair out trying to get their phone to work.
CDMA makes it very difficult and possibly illegal to move phones from carrier to carrier.
Sent from my SPH-D700 using Tapatalk
Click to expand...
Click to collapse
Lol I wanna see america or india try to prosecute an american in india using an american phone on indian airwaves
I doubt they would bother to go through all the diplomatic hurdles that entails just to issue a 50million rupee fine which is like a dime lololololololol
But nah seriously, there's only a handful of countries that implement a form of cdma like japan, south korea and india
Most of the world is gsm. If our phones were world phones....oh lawdy lawdy lawd
Sent from my SPH-D700 using XDA Premium App
A_Flying_Fox said:
Lol I wanna see america or india try to prosecute an american in india using an american phone on indian airwaves
I doubt they would bother to go through all the diplomatic hurdles that entails just to issue a 50million rupee fine which is like a dime lololololololol
But nah seriously, there's only a handful of countries that implement a form of cdma like japan, south korea and india
Most of the world is gsm. If our phones were world phones....oh lawdy lawdy lawd
Sent from my SPH-D700 using XDA Premium App
Click to expand...
Click to collapse
Either way it's tedious and requires you have an indepth knowledge of QPST.
The legal way requires the Indian Telco to accept your ESN (which they probably won't).
The only other way is either personally knowing someone who works for the telco to add your phone anyway or cloning which is even more tedious and possibly illegal.
With GSM, buy a sim, pop it in, go on with your life.
Yeah but we need ways to sell this phone.
I'm sure op is down fr some qpst time
There's a thread in here to get it flashed to metro, boost blahblahblah so try that out and instead of using mtro or boost parameters, use the indian telco info
Sent from my SPH-D700 using XDA Premium App
I am using it without cloning or anything of that sort, OP you need to PM ahmgsk or someone else who knows what to do, if you PM me can help.
hi guys, i recently buy a HTC my touch 4G during a travel to U.S. when i came back to my country (panama) and try to use a 4G SIM cards from two different companies but it just show edge in the notification bar.
with stock 2.2.1 just edge.
phone rooted and use virtuosity : edge
them i think that would be radio issues, i flash 4 and all have the same result: Edge
flash virtuous unity results: Edge
flash radios again result: Edge
set the network mode to wcdma : edge
I use the search i don't find something useful to fix this issue.
please Help.
removed, misread question
This has NOTHING to do with T-Mobile.
Read my answer in this thread:
http://forum.xda-developers.com/showthread.php?t=952005
Please search better next time. There are enough "stuck on Edge" threads, and one of them is on the front page of the forum. Not quite hard to find.
Jack_R1 said:
This has NOTHING to do with T-Mobile.
Read my answer in this thread:
http://forum.xda-developers.com/showthread.php?t=952005
Please search better next time. There are enough "stuck on Edge" threads, and one of them is on the front page of the forum. Not quite hard to find.
Click to expand...
Click to collapse
well that is what i thought. my bad, didnt know there was a thread about it
EDIT: i misread the question...whoops! thought he meant that he is going to the USA from panama, but its the other way around
It has to do with radio frequency T-Mobile uses 1700mhz for 4g depends on what other carrier's use and in which country
Sent from my HTC Glacier using XDA App
It also could be that this is a question and needs to be asked in q&a section. Where are all the moderators?
Sent from my HTC Glacier using Tapatalk
According to all the information I can find - the only frequencies used for HSPA (3G but some carriers brand it as "4G") in Panama are 850 and 1900. The MyTouch 4G does not have either of those bands. Most T-Mobile phones do not, although a few newer ones do (Amaze, SGSII, Exhibit II).
All 3G/"4G" smartphones from AT&T do have the correct compatible 3G bands for carriers in Panama. So... you should have bought an AT&T phone, not a T-Mobile phone.
Sorry. I guess you'll have to do your research next time. Maybe you can sell it on eBay to someone who lives in Europe, Africa, Asia, Canada, USA, Aruba, Brazil, Uruguay... these are the locations which have networks that are compatible with the MT4G.
Lucas1 said:
hi guys, i recently buy a HTC my touch 4G during a travel to U.S. when i came back to my country (panama) and try to use a 4G SIM cards from two different companies but it just show edge in the notification bar.
with stock 2.2.1 just edge.
phone rooted and use virtuosity : edge
them i think that would be radio issues, i flash 4 and all have the same result: Edge
flash virtuous unity results: Edge
flash radios again result: Edge
set the network mode to wcdma : edge
I use the search i don't find something useful to fix this issue.
please Help.
Click to expand...
Click to collapse
No need to be mean. Sorry for the misinformation.
poexone said:
I had the same problem. I went in and got my simcard changed and it solved the problem.
Click to expand...
Click to collapse
... seriously.
RTFQ.
The original poster is using the phone in Panama. Your experience in California is not relevant because the phone is not compatible with Panama's 3G networks.