Hello,
I bought an unlocked I9505 version of the Galaxy S4 and live in the US and my carrier is AT&T.
I know I have LTE service in my area since I came from iPhone and other phones in my household has LTE service in their phone's but mine?
My I9505 only shows and toggles between H and H+ but not the 4G and LTE subscript text next to the signal bars.
I've checked to make sure that under Mobile Networks that LTE/GSM/WCDMA is chosen and APN* settings are correct.
Anyone else having the same experience? Is there something wrong with the phone?
It has LTE, I get 4G on mine
Sent from my GT-I9505 using xda app-developers app
What could be possibly wrong with mine?
exnokiafanboy said:
What could be possibly wrong with mine?
Click to expand...
Click to collapse
I flashed the latest ROM (MDN) and first I did no have LTE a well, but after I did factory reset - it appeared .
Sent from my GT-I9505 using xda premium
did your simcard support LTE ??
MsElise said:
did your simcard support LTE ??
Click to expand...
Click to collapse
I think - it does not support. We do not have LTE service here yet. But I have a choice LTE/GSM/WCDMA (auto connect)
Sent from my GT-I9505 using xda premium
MsElise said:
did your simcard support LTE ??
Click to expand...
Click to collapse
Yes, I also called AT&T support to make sure I'm provisioned to have LTE and they said yes.
In germany we have a problem too.
interrupts the LTE network and you have no more contact?
It seems as if there were in all i9505's the problem. I turned it off, because LTE is too expensive here.
Gesendet von meinem GT-I9505
myname70 said:
I flashed the latest ROM (MDN) and first I did no have LTE a well, but after I did factory reset - it appeared .
Sent from my GT-I9505 using xda premium
Click to expand...
Click to collapse
I've already did a factory reset once but nothing happened. It's still not showing LTE.
exnokiafanboy said:
Hello,
I bought an unlocked I9505 version of the Galaxy S4 and live in the US and my carrier is AT&T.
I know I have LTE service in my area since I came from iPhone and other phones in my household has LTE service in their phone's but mine?
My I9505 only shows and toggles between H and H+ but not the 4G and LTE subscript text next to the signal bars.
I've checked to make sure that under Mobile Networks that LTE/GSM/WCDMA is chosen and APN* settings are correct.
Anyone else having the same experience? Is there something wrong with the phone?
Click to expand...
Click to collapse
As far as I know of, the GT-I9505 does not support AT&T LTE bands. This would explain why you can't get any LTE signal with it.
Sent from my GT-I9505 using xda premium
mathieulh said:
As far as I know of, the GT-I9505 does not support AT&T LTE bands. This would explain why you can't get any LTE signal with it.
Sent from my GT-I9505 using xda premium
Click to expand...
Click to collapse
Awww, that's a bummer.
I am having the exact same issue, I have an i9505 and do not get the option of LTE on the list only GSM/WCDMA, GSM Only or WCDMA Only.
I had an LTE S3 and obviously that had an option for it in the network settings.
If the 4G was not compatible in my area then i would assume it would not be able to find a signal and not just disallow the selection in the settings.
Im in Australia btw and bought it unlocked from a company that shipped from Hong Kong.
chriswazza said:
I am having the exact same issue, I have an i9505 and do not get the option of LTE on the list only GSM/WCDMA, GSM Only or WCDMA Only.
I had an LTE S3 and obviously that had an option for it in the network settings.
If the 4G was not compatible in my area then i would assume it would not be able to find a signal and not just disallow the selection in the settings.
Im in Australia btw and bought it unlocked from a company that shipped from Hong Kong.
Click to expand...
Click to collapse
You need a LTE compatible USIM to be able to list the "4G" option otherwise it does not appear. It's kinda stupid but it's the way it works.
Sent from my GT-I9505 using xda premium
mathieulh said:
You need a LTE compatible USIM to be able to list the "4G" option otherwise it does not appear. It's kinda stupid but it's the way it works.
Sent from my GT-I9505 using xda premium
Click to expand...
Click to collapse
Ok, this is the sim i was using in my LTE S3 and that worked fine. Should this not work?
chriswazza said:
Ok, this is the sim i was using in my LTE S3 and that worked fine. Should this not work?
Click to expand...
Click to collapse
Hum... That's odd, maybe your CSC does not allow LTE.
Sent from my GT-I9505 using xda premium
mathieulh said:
Hum... That's odd, maybe your CSC does not allow LTE.
Sent from my GT-I9505 using xda premium
Click to expand...
Click to collapse
Ok. What would that mean? I was assured by the company I bought it from that it would work.
My csc is i9505zzhamde if that helps
I've contacted AT&T tech support and found out the reason why I can't get LTE. Different techs will give you different answers so I kept prying each
tech that I've encountered with to give me some sensible answer.
One tech said that the 9'th and 10th digit of the ATT sim should be 2 and 5. I checked my old iPhone's nano sim and it was 2 and 5. The replacement sim that I've received when I got my S4 was 2 and 9. So I went to an AT&T store to have my sim replaced, ofcourse they ignored what I told them that I'd like to have a sim with the 9th and 10th digit to be 2 and 5. ATT rep said that their new sim should work with LTE (which I thought should be) regardless of the 9th and 10th digit. Then, nothing still H+. Oh well...
So went home and tried chatting with the rep again and found out this:
LTE service is not provisioned in my plan since AT&T's system can't recognize my phone's IMEI hence they can't add it to their system.
So does that mean that GT-I9505 can have 4g LTE with AT&T's as long as they can register my IMEI on their network?
but w/e the sooner I can get over that I9505 isn't compatible with AT&T 's LTE the better.
Hm... When I was with Hybrid ROM MDN and modem MDN without ANY CSC, it shows me LTE/GSM/WCDMA (auto connect). But now I flashed Modified MDM ROM with MDM modem with BTU CSC and the LTE disappeared..... I have only GSM/WCDMA option.... (just to remind that My GSM Operator does not provide LTE)
What do you think? maybe the LTE/GSM/WCDMA (auto connect) in the menu depends on th chosen CSC...
I think they are telling you a bunch of lies. The I9505 does not have the LTE bands for AT&T and that's really all there is to it.
Sent from my SGH-I337M using xda premium
Related
hi, you can simply turn on LTE radio on Nexus 4. Look here http://www.youtube.com/watch?feature=player_embedded&v=GXOY9EVZ4vA#
Fantastic!
Sent from my Galaxy Nexus using xda premium
lolwut? I get 17Mbps down here in Chicago on HSPA+. There's no need for that battery draining pos LTE if you ask me.
I did the phone menu thing and changed it to lte/CDMA/gsm and its a little faster.
Going to do a speed test.
I'm on T-Mobile BTW and either way my phone gets the H not the 4g icon
Going to download speed test and screen shoot the difference to see
Sent from my Nexus 4 using xda premium
KiNG OMaR said:
lolwut? I get 17Mbps down here in Chicago on HSPA+. There's no need for that battery draining pos LTE if you ask me.
Click to expand...
Click to collapse
We couldnt get LTE on our Nexus 4's here on ATT if we wanted...I tried it doesnt pick up ATT's network when you force LTE Mode.
jaestreetss said:
I did the phone menu thing and changed it to lte/CDMA/gsm and its a little faster.
Going to do a speed test.
I'm on T-Mobile BTW and either way my phone gets the H not the 4g icon
Going to download speed test and screen shoot the difference to see
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
TMobile does not have LTE. It will not make a diff with TMobile SIM.
This may work if you have an ATT SIM and in ATT's LTE area.
---------- Post added at 08:22 AM ---------- Previous post was at 08:21 AM ----------
djkinetic said:
We couldnt get LTE on our Nexus 4's here on ATT if we wanted...I tried it doesnt pick up ATT's network when you force LTE Mode.
Click to expand...
Click to collapse
Are you sure LTE is available in your area?
junks2010 said:
TMobile does not have LTE. It will not make a diff with TMobile SIM.
This may work if you have an ATT SIM and in ATT's LTE area.
---------- Post added at 08:22 AM ---------- Previous post was at 08:21 AM ----------
Are you sure LTE is available in your area?
Click to expand...
Click to collapse
isn't working on ATT, for me at least it isnt, and I know theres LTE coverage here, when my S III on ATT is sitting with LTE service, and my N4 isnt picking up any service while in LTE Mode, both microsims are LTE enabled with LTE shared Data Plans, both have APN set to pta (manually added on N4)
djkinetic said:
isn't working on ATT, for me at least it isnt, and I know theres LTE coverage here, when my S III on ATT is sitting with LTE service, and my N4 isnt picking up any service while in LTE Mode, both microsims are LTE enabled with LTE shared Data Plans, both have APN set to pta (manually added on N4)
Click to expand...
Click to collapse
Thanks for confirming.
Pretty sure it's been confirmed on some att. Did you change your APN settings to match what the s3 has?
Sent from my Nexus 4 using Tapatalk 2
Basically if it's not Band 4 it won't be supported, Band 4 only appears to be active in Canada, and in America (AT&T, but i guess either it may only be rolled out in some places, or they may just have the spectrum, but not actively use it for LTE)
http://en.wikipedia.org/wiki/List_of_LTE_networks
Why was this thread needed? There is a perfectly good one in general where ALL of this has been discussed?
droidmakespwn said:
Pretty sure it's been confirmed on some att. Did you change your APN settings to match what the s3 has?
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Yes settings are the same.
Doesn't work for att here but also every time I use the *#*#4636#*#* I keep getting a setting force close I have cleared settings data and factory reset any ideas?
Sent from my Nexus 4 using Tapatalk 2
Thanks for the tip OP! I'm on the Rogers network here in Toronto Canada and this tweak worked perfectly!
My only concern is how will this affect the battery?
Confirmed via speed test app that this is in fact LTE speeds!
Sent from my Nexus 4 using Tapatalk 2
As stated in last post on first page of this thread. Canada using Band 4, and USA ATT is using Band 17. So less there's this phone does somehow support Band 17, and just need proper settings, then we are SOL for this fix.
"Since TELUS has the same LTE band 4 (1700/2100MHz) as Bell and Rogers, this means the Nexus 4's LTE will probably work on those carriers too.
UPDATE: AT&T has only rolled out LTE on Band 17 so far, so this won't work on AT&T.
" - Quoted from OP youtube posting.
Rogers LTE speeds here in Toronto Canada
Sent from my Nexus 4 using Tapatalk 2
Hi mates!
Don't fire me if this is a repetitive question. I searched along the forum around 1 hour. But I couldn't find what I was seeking for.
My problem is
Since Samsung was boasting that S4 is LTE capable, I bought an i9500. But, in the network mode it doesn't show LTE mode.
Why is that?
I have a LTE connection at home. If I connect my phone through WiFi will I get LTE network?
Thanks in advance!
Unfortunately you have bought the wrong model, as their is NO LTE for I9500 (Octa).
You need either the Korean version (Octa + LTE) or I9505 (SnapDragon)
Sent from my GT-I9500 using xda premium
UpInTheAir said:
Unfortunately you have bought the wrong model, as their is NO LTE for I9500 (Octa).
You need either the Korean version (Octa + LTE) or I9505 (SnapDragon)
Sent from my GT-I9500 using xda premium
Click to expand...
Click to collapse
Thank you very much for your response, sir.
In GSMARENA they have mentioned in this way. "4G Network LTE (market dependent)"
If you don't mind can you please explain me what does "market dependent" mean?
mayasl said:
Thank you very much for your response, sir.
In GSMARENA they have mentioned in this way. "4G Network LTE (market dependent)"
If you don't mind can you please explain me what does "market dependent" mean?
Click to expand...
Click to collapse
Market dependent means that it is only supported if your carrier has in available in the area in which you reside.
You will not get LTE on WIFI. LTE is strictly cellular signal.
wolfgrrl said:
Market dependent means that it is only supported if your carrier has in available in the area in which you reside.
Click to expand...
Click to collapse
My carrier supports LTE.
Then why doesn't my i9500 connect using LTE?
mayasl said:
My carrier supports LTE.
Then why doesn't my i9500 connect using LTE?
Click to expand...
Click to collapse
I would call my carrier and ask them. How do you know that you have LTE at your home? Did you have a different phone that connected thru the LTE network?
wolfgrrl said:
I would call my carrier and ask them. How do you know that you have LTE at your home? Did you have a different phone that connected thru the LTE network?
Click to expand...
Click to collapse
I bought a 4G connection with the router from the ISP.
So, I hope that I have a LTE connection at home.
The GT-I9500 doesn't have a LTE radio, period. You picked the wrong phone for LTE.
Sent from my GT-I9505 using xda premium
Ok friends!
Thank you all for clarifying my doubt.
Hi everyone,
I recently got an amazon.COM gift card, but I live in Canada. I want to purchase a Galaxy S4 but I don't know which movel to get. From my understanding, the model Telus Canada offers is the i337m, so naturally I looked at the sgh-i337 offered by AT&T. Will I get LTE network using the AT&T S4 on Telus?
Some of my research:
The SGH-I337 works on the following bands:
LTE: Bands 1/4/7/17; HSPA+/UMTS: 850/1900/2100MHz; GSM: 850/900/1800/1900MHz
(source: Samsung website (can't post external links =[ ))
And according to this page: wikipedia/List_of_LTE_networks#Americas (again, no external links), it would seem that Telus uses band 4 for its LTE networks. Can anyone confirm if this will allow the SGH-I9337 to have LTE network on Telus?
Thanks!
It works if you have it unlocked.
Sent from my Nexus 7 using Tapatalk 4
Amazon item
ma678 said:
It works if you have it unlocked.
Sent from my Nexus 7 using Tapatalk 4
Click to expand...
Click to collapse
Thanks for the quick reply!
Here's what I was thinking of buying: amazon.com/gp/product/B00CRO6QFA/ref=s9_simh_gw_p107_d0_i1?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-2&pf_rd_r=1APEBNR0F4V4YMKB72BA&pf_rd_t=101&pf_rd_p=1389517282&pf_rd_i=507846
I would try to find a tmobile, or international I9505 so you don't have to worry about a locked boot loader
Sent from my Nexus 10
mymusicathome said:
I would try to find a tmobile, or international I9505 so you don't have to worry about a locked boot loader
Sent from my Nexus 10
Click to expand...
Click to collapse
But the I9505 won't have LTE network on Telus, right?
Update
Hi everyone,
I thought I'd write a follow-up on this thread for anyone that might stumble on it later on.
I did receive my unlocked SGH-I337 (not SGH-I337M) and it did not immediately work on Telus' LTE network (it didn't even work on 3G/EDGE either). But I did not stop there. I set the APN setting as mentionned on Telus' website and that didn't work either. At that point I was a bit desperate and I called Telus to make sure it wasn't something on their end, it wasn't. At this point I was a little panicking, I thought I would have to re-sell my phone.
So I rooted my phone using this technique: http://forum.xda-developers.com/showthread.php?t=2387577 (I had the MF3 firmware version).
Then I did this "hack" to enable more LTE bands: http://forum.xda-developers.com/showthread.php?t=2291589 (*#7284# didn't work for me, but I found the solution elsewhere, I had to use *#0808* instead).
Then using *#2263# I chose "[6] LTE/WCDMA Mode Only" and voilà, I was using Telus' LTE network!
Credit goes to authors in the posts mentioned above.
Hopefully this might help someone else at some point! Thanks everyone.
You need to unlock your phone to enable lte hack, while root is not necessary.
Congrats on its working now.
Sent from my Nexus 7 using Tapatalk 4
ma678 said:
You need to unlock your phone to enable lte hack, while root is not necessary.
Congrats on its working now.
Sent from my Nexus 7 using Tapatalk 4
Click to expand...
Click to collapse
Thanks!
I thought you had to be rooted due to this post: http://forum.xda-developers.com/showpost.php?p=42069163&postcount=71, thanks for the update, though.
Anyhow, it's good to be rooted
I haven't rooted my phone yet, but I have enabled LTE after unlocking my phone., and I use it on Wind mobile network.
Sent from my Nexus 4 using Tapatalk 4
can anyone tell me how to set 4g lte on my xperia sp rooted on ofw cuz my carrier doesn't send me the radio update and everytime i set 4g it goes to 3g again my sim three uk and my eria has 4g coverage
Do you have a contract that gives acces to LTE network?
mrjraider said:
Do you have a contract that gives acces to LTE network?
Click to expand...
Click to collapse
Happened to me in Vodafone, I contacted them and they gave me access to 4g networks with no additional cost
Sent from my C5303 using xda app-developers app
I have an SP on three aswell man, my stock 4.1 didn't have the 4G option too, I'm on EXistenZ and i have 4G now
Sent from my C5303 using XDA Premium 4 mobile app
Same here. No option for 4g on stock rom while on three
Sent from my C5303 using Tapatalk
Dial: *#*#4636#*#* and go into Phone information in there you can select radio..
Won't let me change it
Sent from my C5303 using Tapatalk
mrjraider said:
Do you have a contract that gives acces to LTE network?
Click to expand...
Click to collapse
izz77 said:
can anyone tell me how to set 4g lte on my xperia sp rooted on ofw cuz my carrier doesn't send me the radio update and everytime i set 4g it goes to 3g again my sim three uk and my eria has 4g coverage
Click to expand...
Click to collapse
Maybe you need a 4G sim? If i remember correctly when 3g came around for orange i had a 3g phone but my sim wasn't 3g so therefore i had to buy a 3g sim card in order for the 3g capabilities on my phone, Unless you ring up 3network and explain to them your having trouble getting 4g on your device,
They'll probably tell you you'll need a new sim or something
According to the site it's a software upgrade from three that's needed
Sent from my C5303 using Tapatalk
There's just not much reliable coverage yet, there's no need for a software update on an android phone, if it's capable it will get it. I often get an lte connection when I'm out and I did no such update
Sent while my supervisor wasn't looking
izz77 said:
can anyone tell me how to set 4g lte on my xperia sp rooted on ofw cuz my carrier doesn't send me the radio update and everytime i set 4g it goes to 3g again my sim three uk and my eria has 4g coverage
Click to expand...
Click to collapse
Did you set network mode to LTE(preferred) in mobile network settings?
@non4 said:
There's just not much reliable coverage yet, there's no need for a software update on an android phone, if it's capable it will get it. I often get an lte connection when I'm out and I did no such update
Sent while my supervisor wasn't looking
Click to expand...
Click to collapse
According to site like I said
How can I get 4G?
To get 4G when it comes to your area you need to make sure you’ve downloaded all the latest software updates on your 4G device. Your 4G update is not labelled as 4G, so we recommend you download all software to ensure you have access to 4G when it comes to your area.
Sent from my C5303 using Tapatalk
For it to show lte mobile data must be on if it's not it won't say lte
Sent from my C5306 using Tapatalk
I've frequently been noticing my GS5 to have a really strong LTE connection (~90Mbps) and minutes later without moving at all I'm suddenly on 4G (HSPA+?). Is anyone else experiencing this or should I get my unit exchanged?
Sent from my SM-G900W8 using Tapatalk
toews said:
I've frequently been noticing my GS5 to have a really strong LTE connection (~90Mbps) and minutes later without moving at all I'm suddenly on 4G (HSPA+?). Is anyone else experiencing this or should I get my unit exchanged?
Sent from my SM-G900W8 using Tapatalk
Click to expand...
Click to collapse
I'm going to be totally useless but I'm jealous of your 90mbps connection. This is in Canada right?
aooga said:
I'm going to be totally useless but I'm jealous of your 90mbps connection. This is in Canada right?
Click to expand...
Click to collapse
Yup. I was surprised too.
Sent from my SM-G900W8 using Tapatalk
toews said:
Yup. I was surprised too.
Sent from my SM-G900W8 using Tapatalk
Click to expand...
Click to collapse
Have you tried re-flashing the modem in ODIN? It's probably not going to work, but before returning it, it's worth a try.
aooga said:
Have you tried re-flashing the modem in ODIN? It's probably not going to work, but before returning it, it's worth a try.
Click to expand...
Click to collapse
The thing is that I'm not rooted and running pure stock 4.4.2 since day one so I don't see why my modem would not be fine.
Sent from my SM-G900W8 using Tapatalk
toews said:
The thing is that I'm not rooted and running pure stock 4.4.2 since day one so I don't see why my modem would not be fine.
Sent from my SM-G900W8 using Tapatalk
Click to expand...
Click to collapse
Yeah just get a replacement if you can then. I'm in the US, but it doesn't do that for me.
aooga said:
Yeah just get a replacement if you can then. I'm in the US, but it doesn't do that for me.
Click to expand...
Click to collapse
One theory I have about it is that my SIM card has been put in and out of many phones and perhaps the contacts are a little weak at this point. Do you know if that would affect my signal?
Sent from my SM-G900W8 using Tapatalk
toews said:
One theory I have about it is that my SIM card has been put in and out of many phones and perhaps the contacts are a little weak at this point. Do you know if that would affect my signal?
Sent from my SM-G900W8 using Tapatalk
Click to expand...
Click to collapse
No, it has nothing to do with signal. The phone can get signal even without a sim card. All the sim card does is register you on the network. If the sim card was bad, it would most likely kick you off the network completely.
One last thing: Have you edited the APN settings at all? Are you sure they are the default supplied by your carrier?
aooga said:
No, it has nothing to do with signal. The phone can get signal even without a sim card. All the sim card does is register you on the network. If the sim card was bad, it would most likely kick you off the network completely.
One last thing: Have you edited the APN settings at all? Are you sure they are the default supplied by your carrier?
Click to expand...
Click to collapse
Nope, haven't edited them.
Sent from my SM-G900W8 using Tapatalk
toews said:
Nope, haven't edited them.
Sent from my SM-G900W8 using Tapatalk
Click to expand...
Click to collapse
Does it happen in only one place or everywhere?
aooga said:
Replacement time.
Click to expand...
Click to collapse
Alright, thanks for your help
Sent from my SM-G900W8 using Tapatalk
toews said:
Alright, thanks for your help
Sent from my SM-G900W8 using Tapatalk
Click to expand...
Click to collapse
See my edit. I asked if it happens everywhere or just in one location
toews the question does not make sense, lte and 4g are one and the same, do you mean 3g?
homer285 said:
toews the question does not make sense, lte and 4g are one and the same, do you mean 3g?
Click to expand...
Click to collapse
There are different version of 4g HSPA+ is known as 4G but it is different from 4G LTE. Have u tried editing the band priorities maybe their competing against each other.
Sent from my HTCONE using Tapatalk
luigi311 said:
There are different version of 4g HSPA+ is known as 4G but it is different from 4G LTE. Have u tried editing the band priorities maybe their competing against each other.
Sent from my HTCONE using Tapatalk
Click to expand...
Click to collapse
Which carrier is doing that? how confusing.
Wiki:
HSPA+, or Evolved High-Speed Packet Access, is a technical standard for wireless, broadband telecommunication. HSPA+ enhances the widely used WCDMA (UMTS) based 3G networks with higher speeds for the end user that are comparable to the newer LTE networks. HSPA+ was first defined in the technical standard 3GPP release 7 and expanded further in later releases.
In the United States, it is commonly available under AT&T Mobility and T-Mobile US.
homer285 said:
Which carrier is doing that? how confusing.
Wiki:
HSPA+, or Evolved High-Speed Packet Access, is a technical standard for wireless, broadband telecommunication. HSPA+ enhances the widely used WCDMA (UMTS) based 3G networks with higher speeds for the end user that are comparable to the newer LTE networks. HSPA+ was first defined in the technical standard 3GPP release 7 and expanded further in later releases.
In the United States, it is commonly available under AT&T Mobility and T-Mobile US.
Click to expand...
Click to collapse
Every carrier in north America.
Sent from my SM-G900T using Tapatalk
homer285 said:
Which carrier is doing that? how confusing.
Wiki:
HSPA+, or Evolved High-Speed Packet Access, is a technical standard for wireless, broadband telecommunication. HSPA+ enhances the widely used WCDMA (UMTS) based 3G networks with higher speeds for the end user that are comparable to the newer LTE networks. HSPA+ was first defined in the technical standard 3GPP release 7 and expanded further in later releases.
In the United States, it is commonly available under AT&T Mobility and T-Mobile US.
Click to expand...
Click to collapse
Lol pretty much every carrier that has HSPA+ markets it as 4g because of speed
Sent from my HTCONE using Tapatalk
luigi311 said:
Lol pretty much every carrier that has HSPA+ markets it as 4g because of speed
Sent from my HTCONE using Tapatalk
Click to expand...
Click to collapse
And just to clear things up for me, you will see 4g and lte icons in the taskbar and switch between the two respectively? Oh and I see no mention of 4G relating to HSPA+ but lte yes, so I still am unclear what the OP has asked.
Edit: nevermind it doesnt matter, very confusion lol. Sorry toews didnt mean to hijack your thread dude.
You can google your apn settings from google.
Example.
Att apn settings.
And you can go into settings more networks and create a new apn. Just make sure you enter it exaxctly as it reads.
Xda folks have alot if threads on different apns for achieving higher speeds. You create the new apn hit menu and then save toggle the new apn and reboot.. alot of times if your seeing fluctuation it can be due to a node on one if the local towers in your area.
But as stated it wouldnt hurt to upgrade your modem. Of course this does involve root and custom recovery such a twrp.. hope this helps.?
Sent from my MARCUS! using Tapatalk