Please forgive me if I am re-paving old parking lots here, but I *have* done a lot of research (although I am admittedly a noobie), and I have found a lot of conflicting information that I have not been able to glean a confirmation from.
I have recently mistakenly purchased (my mistake 100%) a generic factory unlocked SM-G900F that came with lollipop on it, and I am very happy with just about everything except that ATT is my carrier, they transmit lte at least primarily on frequency 700, and the SM-G900F does not support that frequency, at least out of the box.
So, there is my question: are the frequencies "hardwired" in in some way so there is no changing them short of (mythically) physically changing modems or something like that (which would essentially mean that I'm stuck)? Or alternatively are the frequencies "softwired" in such way that rooting then flashing something in or changing/adding code could get my 900F to receive ATT's 4g/lte transmissions???
Thanks in advance-
kfbc
Well, OK then...If the answer to that question isn't here, can anyone tell me where to look?
Related
I realize that I'm likely to get instantly bashed for asking about this, but please let me preface my post with saying that I have done about 6 hours of research, here and elsewhere, but have not found a definitive answer to my question(s).
I recently purchased an xperia x1a. To my vast disappointment, the speeds i'm getting online are incredibly low (~200k). I know it has nothing to do with my service because if I pop my SIM into another phone, i get ~1000k generally.
My phone came "unlocked" and unbranded. I am in the US on ATT, and I can connect to HSPDA without a problem (isp.cingular as my AP).
I would like to try installing another radio on my phone to see if it might resolve my problems, but from all of my research, it sounds as though doing this requires security unlocking (CID) the phone.
First off, is there any chance my phone, brand new, came "security unlocked"? If so, is there any way to tell?
If I must security unlock my phone, it sounds like the code to do so is floating around, but since it's for sale places, no one is willing to give it away for free (or is it somehow linked to your IMEI?). I'm not altogether unwilling to pay to unlock my phone, although if there is any other route for upgrading to a better radio without having to pay, obviously that would be ideal.
I've got the radio I want, I've hex edited it so that it should work on my phone, but I'm very leery about bricking it by installing a radio that won't work. As I said, I have done a HUGE amount of research on this topic (flashing a new radio) and haven't found much that's definitive. On my last phone, a Diamond, I had no such issues (I purchased it retail, also unlocked and unbranded).
If anyone can shed some light on some of these questions, I would really appreciate it. I've been over to htccode and it sounds like they have a solution (at least for the X1, not sure about the X1A), but I would really like to understand this entire issue better.
Also, my current radio is 1.06.25.29. Can I simply cleanly upgrade to one of the newer radios found here: http://forum.xda-developers.com/showthread.php?t=477801 without having to worry about unlocking? are the radios for the X1 and X1A the same?
I promise, I've searched.
YUP 200 Kb only ???
My provider is TIGO and, same as you I assume, I use a "security locked" X1a under the HSDPA 850MHz band
If you are not getting better speeds with your current radio, I guess a Radio upgrade wouldn't help because I've been gettin' up to 3,500 Kbps downloads without any worries or special tweaks, and yes I started with Radio 1.06.xx.xx
Some possibilities:
1- Try checking your advanced network config (under start->settings->connections) to check if HSDPA is enabled
2- It could be an operator-config dependant issue; check your parameters in your otehr phone against the parameters auto-configured in the XPERIA
3- Check if your phone is REALLY X1a: remove the battery and the white label must say "X1a", not just "X1"
Finally, ALL RADIOS and EVERYTHING posted here @ xda-devs work for ALL X1, it doesn't matter if it is X1a or X1i
PS: The "security unlock" is ONLY required to flash Radios from OTHER HTC devices (but we have already managed to make them compatible by hex-editiing them )
hope this helps
I've tried everything i can think of and I'm banging my head against the wall. The phone's next. Actually, I think that I'm going to go ahead and get a new SIM from AT&T and see if that helps any, since I'm now having some issues with my blackjack all of a sudden....
Hi all, this is my first post or thread, i came here cause i heard from ppl this is best site for asking questions about cell phones, i started reading allot this forum and wow did i enter the other world i really like and wanna participate in.
Srry for little intro and lets get back to topic. So i got my first "normal" android and got trouble with it. I am using Samsung galaxy s5 g900F (european) factory unlocked and T-mobile as carrier with 4.4.2 kitkat. I have a big problem with a data connection that keeps going off every 30sec to 5 min if i use option to search and auttoconnect on LTE/WCDMA/GSM option. I read forum but no1 is mentioning this model as problematic 1 so now i post thread about.
Does any1 know what could be problem and how to solve it. Sometimes my data connection comes back and sometimes it doesnt and i have to switch type of network to get back again online. All other options that don't include LTE auttoconnect work just fine, i tried to get another SIM from carrier but same problem, i tried to get another Phone since i work in hardware firm and still same problem on another device, both were same models.
I still didn't put any ROMs but i really consider doing it maybe l8r on, it is stock version.
Pls be genttle since this is first time i post, maybe i did it on wrong place but i did read rules and everything and i think i did it on right place.
Ty in advance.
I did have a slightly similar problem years ago - when in roaming my phone could not connect to anything. What helped was a change of simcard for a new model - after that all was good.
Since you did try your SIM on a different phone (same 900F?) I would advise you to try: first on a completely different brand and phone model - if you can.
If this does not solve your problem do shake your service provider a bit - they could have supplied you with two faulty SIM cards in a row - that can happen. Otherwise - maybe there is a stupid limitation in your service plan which is causing this. There is no - to my knowledge - ready answer to the problem you have described.
Best of luck and if you do solve it come back and post - it will be very useful to lots of people for sure
Cheers!
Too many variables. You haven't observed enough of a pattern yet or tried enough things to narrow it down a bit. It could just as easily be carrier side issues as a bug in the firmware not negotiating a new connection if the LTE signal is lost.
A number of people were having data disconnect issues and that was addressed in the 4.4.3 /4.4.4 update. So that is one option to consider. And you could open a support ticket with your carrier. That is hit and miss as to results, but sometimes tickets actually resolve issues.
There are also a number of apps that may mitigate or possibly even solve your issue. Have a look at 4G LTE Switch and LTE Discovery.
.
Will try it today. Thanks for the help. Really appreciate it.
Sent from my SM-G900F using Tapatalk
rnrnrn said:
I did have a slightly similar problem years ago - when in roaming my phone could not connect to anything. What helped was a change of simcard for a new model - after that all was good.
Since you did try your SIM on a different phone (same 900F?) I would advise you to try: first on a completely different brand and phone model - if you can.
If this does not solve your problem do shake your service provider a bit - they could have supplied you with two faulty SIM cards in a row - that can happen. Otherwise - maybe there is a stupid limitation in your service plan which is causing this. There is no - to my knowledge - ready answer to the problem you have described.
Best of luck and if you do solve it come back and post - it will be very useful to lots of people for sure
Cheers!
Click to expand...
Click to collapse
yep i tried on same model 900F, hmm i will try it on another cell phone with LTE and will post what happened, thx allot for info
Hello gents,
before you dismiss yet another S4 WiFi issue related post, keep in mind I am a Network Administrator for a living. What I do know well is wireless, what I don't is why my and many other's S4s are plagued with the WiFi issue.
If one is to search Galaxy S4 wifi problems, you will find a whack load of results with basic answers that don't resolve the issue. I am one of the lucky owners of a I337m Galaxy S4 that is a perfect phone, except the WiFi is absolute wonkers. My S4 is extremely inconsistent with being able to connect to 2.4Ghz networks, though 5Ghz is fine. I have attached a gif as an example of what occurs, though the signal is strong it refuses to connect instantly or gives "authentication error". There are good days, there are bad, but mostly bad.
I even gone as far as taking the phone apart and replacing the WiFi antenna with an external modified version, trust me it is NOT an antenna issue. I came across a youtube video of a fella with an i9505 who claimed to be able to fix the wifi issue by changing the baseband. This I would love to try though as far as I know there is only one baseband for the Canadian S4 if I read the forum posts correctly. At&t has a few which I wouldn't mind trying, but is it possible to flash the baseband from Bell to At&t (i337m to i337)? Would that even affect the Wireless functionality in the phone, or is it purely for the cellular network?
Hello,
I'm new to the forum, and having a real hard time identifying what is, and isn't possible regarding hardware manipulation. I have a Samsung Galaxy Note5 SM-N9208, which originated in Taiwan. I am on T-Mobile in the U.S., and I would like to make this device fully compatible with T-MOBILE's network. I am new to rooting, and flashing, so I don't have a strong enough understanding of the capabilities of such things. I was led to believe that it was possible to root, unlock the bootloader, change the CID, and flash the radio to the correct baseband/firmware (sorry if this sounds ridiculous). I have heard, however, that the different models will not accept firmware from different models. I don't understand what prohibits this activity, because the internals seem to all be the same. If anyone can explain this to me, or provide me with a way to accomplish this, if possible, I would be incredibly grateful.
Bootloader signing... do not crossflash. I did and now I'm buying a new logic board.
The latest DFS lets you change the frequency/band a la atheros wifi card + athtool... menu will let you pick bands and write to the phone. That is the only thing I saw besides changing bands from the programming menu.
Well hardware is not limiting you. Its the software. Some of the things just cant be done ex you can run .exe on windows directly but not .apk bcoz apk for android and .exe for winndows. Similarly some of flashing and apps and mod wont work unless they are compatible. Sometimes a mobile has different models which has a little difference but it makes things large. Ex. My mom's grand 2 is SM-G7102 but there is another version SM-G7108 both have identical physique , same circuit but software has +/- additional features. I guess u got it. This is marketing technique. Dont lose hope. You can succeed just gain a little more knowledge. Im 17 nd ive gained knowledge by self exploration. Keep it up. If there is any problem ask other XDA membera
Hello everyone! I am trying to find out how to enable/disable certain bands. My company installs cell phone boosters for people that have poor signal, and i need to be able to select a single band at a time to do speed tests.
I know this is possible with Samsung devices, but was wondering if anyone found a way to lock to a single frequency.
This is possible with Samsung devices but unaware of any way to do this with a Oneplus 8. I think its even possible to do it on the tmobile version?
Any help would be greatly appreciated. (I am also rooted if that helps.)
Wow. I may be onto something. Anyone want to test this out?
**Disclaimer** Do it at your own risk.
I found this. Seems to let me change to whatever band I choose. But the only way I can seem to get back to "all bands" or "automatic" is by selecting all of the ones I use.
Or by typing *#*#4636#*#* and selecting the second from bottom
Download quickshortcutmaker from play store.
Look for: com.oneplus.engmode.bandmode
It was almost all the way down at the bottom for me. (My search doesn't seem to work)
I don't think this requires root or how I found it but it's working! (But, I am rooted, Android 11, stock room)
not sure who else could use this but I hope it helps someone!
Should all be unlocked from begin with, we should have access to all the bands as we're paying to access our networks not Oneplus
You must not have read the op.... He wanted to lock onto a single band to do a speed test for signal booster purposes. Your respknce was a waste of time.
Op, nice job on the work around for yourself
Good information and screen shots! cheers