4G on T-mobile problems - ZenFone 2 Q&A, Help & Troubleshooting

Hello, I have been having some problems with 4G on this phone using the T-mobile network.
From the start I would not get 4G most of the time, I would get 3G,H, or H+ most of the time and it would be very slow.
Then I messed around with the settings and 4G started working flawlessly, but some days ago the problem came back.
There does not seem to be a specific place where this happens, it will happen anywhere.
I used to use this exact same SIM card with another phone(it was a tmobile phone) and never had this problem.
What can be done to fix this?

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[Q] No 3G on Alltel Desire CDMA, stuck in 1xrtt

I bought this phone off ebay. I didn't know when I bought it, but it was already rooted. The seller put the stock rom back on the phone. Everything works great but I am stuck in cdma-1xrtt. Have called Alltel and they updated the prl and we reprogrammed the phone. Still could not get the 3G to work. Installed Oxygen rom to see if it would help but there has been no change. I did notice yesterday while running on wifi that the network said cdma evdo. When I turned off wifi, it reverted back to 1xrtt. I havent been able to duplicate this though. Is there anything I can do to get this running. I love the phone but it is about useless without 3g.
Thanks!
Update
Apparently it is not stuck in 1xrtt. I went across town today and got 3g. My wife's hero gets a strong signal at home, I wonder why my desire doesnt.

4g service but no 3g?

This JUST started yesterday...
So, yesterday at work I noticed I had no data...so I did the typical restart...still no data...I shrugged it off and went on my way. As I was driving I had data again. I use wifi at home, so when I got home I didnt notice any issues and honestly kinda forgot about it. Well on my way back to work this morning I looked at my phone...had full 4g service...all seemed well. Then I got to my office...
Now let me explain I DO have 4g in this area but honestly...its only a solid 4g outside. Its not the greatest indoors. Well in my office I only get 4g if I'm standing at the window or one "sweet" spot at my desk. So 99% of the time I'm in 3g. Well to make a long story short my 3g antenna seems to be borked. I can pull 4g fine...on lunch today I was in 4g and it was working great. However, when I'm in 3g I get zero data...my phone doesnt work in 3g only 4g.
I called verizon and they just decided to send me a new phone...
I have rooted my phone and I have put the newest radio on. That was awhile ago though. Tonight I'm going to try flashing a different radio but has anyone else had this problem?
Again I get NO 3g service only 4g. In an area where 4g is spotty thats NOT good.
Thanks!
Yes, I had the same issue. The first Nexus I had gave me spotty 4G service and never went to 3G in the couple of weeks I had it. Amazon sent me a replacement which is rock-solid. I get solid 4G coverage where I should (my wife and several coworkers have LTE phones so I know where I should) and when I don't have that 3G kicks right in.
I think you should definitely expected better results with a replacement. Good luck.
I had chosen to use 3G over 4G to save battery life. After about a week with the phone I began to notice that I can hardly ever get 3G reception any more, even though 4G reception has always been excellent. I don't think it is a problem with the phone, but rather Verizon tinkering with its network.
I was having the same problem all day today.
I switch the phone to CDMA during the day and use the office's WiFi for data. However, I noticed today as I dropped my daughter off at school after lunch that I had voice only and no data. Her school is the first tower north of my office that doesn't have an LTE radio, so I normally just get 3G.
Not today.
I drove back to the office and I was able to get data through the LTE radio, but the data connection would go dead as soon as I switched to CDMA. I thought there might be something wrong with the CDMA tower, but two of my co-workers had Thunderbolts set to CDMA only and they were having no problems getting data connections.
I talked with tech support for a good couple hours this afternoon and they had nothing for me. Eventually I flashed the leaked 4.0.3 radios and CDMA magically started working again.
Did the new radios fixed the problem, or is it just a coincidence?
Hmmm...
I have been having the same issue since yesterday. Verizon said there is no outages in the area. I had no data all the way home from CT to NY and finally when I got home at night 4G worked. 4G was working in and out on my way in so I forced CDMA to see if that worked and I have been unable to get anything since. I have a new SIM coming today, but somehow I do not think that will solve the issue.
I've noticed this too. I was turning my LTE off thinking it would use 3g, but I'm noticing now that many times I either have 4g or no data at all.
Sent from my Galaxy Nexus using Tapatalk
I'm having the exact same problems and registered here to see what the resolution is. I'm apprehensive to root as I am still within the 15 day return window and quite frankly for 300$ I think this is total BS. Never had a dropped call, missed or unsent text on the 3g network on my old Dinc and I've lived in the same place for 2 years.
OP- could you keep this updated on how your new device works out?
same exact thing happened to me. I'm already on my second nexus and I didn't want a refurb or to lose root. So I flash android revolution hd , used tb to delete all my apps, and hid all signs of root including deleting su. I took it to Verizon and they gave me a new sim card. It was OK for about a day then started acting up again. So I called them from my wife's phone and they had to reset my number to the network and its been fine since
Sent from my Galaxy Nexus using XDA App
justin94 said:
same exact thing happened to me. I'm already on my second nexus and I didn't want a refurb or to lose root. So I flash android revolution hd , used tb to delete all my apps, and hid all signs of root including deleting su. I took it to Verizon and they gave me a new sim card. It was OK for about a day then started acting up again. So I called them from my wife's phone and they had to reset my number to the network and its been fine since
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
What do you mean by reset your number to your network? Never heard that term before
I'm not exactly sure, some techs don't know about it. When I had my charge it had no data. So they reset my number and phone to the network and I immediately got data back
Sent from my Galaxy Nexus using XDA App

lte issue getting better

So like as ive said around these threads about my lte never going on...so today i went to att demanded a new sim card...wallaah lte now works...prbly the sim cad wasnt functioning correctly ...buuut lte sometimes goes away ..i restart my phone and there it is again...if it goes away i gotta restart phone to re obtain it...do you guys think its prbly a phone issue...i should try to get a new one through att warranty????
I've noticed lately that my LTE sometimes drops off to 4G when I'm on a call, but goes back to 4G when I start using something data related. I think it used to always stay on LTE, but I can't confirm that. I did have to restart the phone once to get LTE to show up again, but that was only once. It may be a network issue.
If you have constant problems I would continue to ask AT&T about it.
Yea i think its netwonk issues....i couldnt get my phone replaced they said...but lte does work now better it jus goes off and on i think its due to lte not being out completely so it only works if your in the right area...try to get a new sim card...tell them your phone keeps going on edge...thats what i did and the new sim card did help a lot....
LG NITRO-N XDA APP

[Q] Note II LTE issues and "Not Acti" ??

This is a quick couple of questions for anyone out there that may have a solution. I'm experiencing LTE issues. These issues happened after my note was returned from repair and installed 4.3 OTA. Now, this was a while ago and I recently rooted my device in hopes of fixing the LTE issues, but to no avail. 3G works great but 4G will work sometimes as in: I will have signal but it is very poor in some instances. I've checked in with support and they are of no use. Did all the pertinent resets and reactivations. So I figure the LTE card thats embedded might be the problem. I've checked the APNs and activated the device via WiFi ONLY to see if that would help. And also after my phone was returned I noticed in About Device... in Hardware Version details it has---- Not Acti---- instead of the usual L900.06 or whatever. What may that be? Cause it seems strange in my opinion. Either way 4G LTE works now after rooting and rom'ing than before on stock 4.3 and 4.4.2 where switching to 4G would basically do nothing even though data was being " sent:recieved " . Now 4G works but still loses connectivity randomly when my wife has her S3 and 4G is flawless in the same damn location. LOL. So I know it can't be the towers. Any help is appreciated.

T-Mobile on AT&T S3

I know there's loads of questions and threads about T-Mobile on a S3 but I've been dealing with this issue ever since my girlfriend gave me her old AT&T S3. I signed up on here just now because I couldn't stand trying to figure it out myself anymore.
I've also looked at all those threads and for some reason they all seem to have an opposite issue of what I have. To my understanding, areas that aren't re-farmed will give you 4g LTE and 2g (edge) but no 3g correct?
I get the opposite of that, I get only HSPA+, HSPA, rarely 2g and never LTE. The part I don't understand is why I don't get LTE. My Brother is able to get LTE with his T-Mobile LG G2 so LTE coverage should be fine in my area.
I ended up finding out that T-Mobile requires a newer sim card to work with LTE and I was using an extremely old one that I got when smartphones basically just came out. (I cut it into micro shape) Today I just received my new sim in the mail, popped it in and it showed LTE with 4 bars but I couldn't do anything because I haven't activated it yet. Once I got it activated it went back to HSPA+.
The weird part about this is that if I restart my phone sometimes it'll show LTE for a couple seconds but it'll say "no service" then proceed to go back to H+.
I'd like to at least know someone else gets the same thing because it's been driving me crazy and it seems like I'm the only one having this issue. I've literally been trying to get LTE on this phone for about a year now.
If someone can try helping that'd be cool, thanks

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