topic Re: No 4G/LTE in XPERIA archive

No 4G/LTE

brainFireTony — Sun, 07 Aug 2016 23:17:56 GMT

I'm having an issue with my unlocked Xperia X Performance Dual Sim (international version) where I don't get an LTE signal at all. I have AT&T as my service provider in the United States and made sure I had the correct APN settings. I have tried restarting the phone, resetting, fixing the software through My PC Companion, and taking it to the AT&T store so they can troubleshoot as well. I'm starting to think it's an issue with the phone itself. Anybody have any suggestions?

Re: No 4G/LTE

Uliwooly — Sun, 07 Aug 2016 23:20:51 GMT

@brainFireTony

Did they added the phone's IMEI number to their database? it seems that sometimes 4G/LTE doesn't work unless they do so and/or they enable it.

BTW, which APN settings are you using?

Re: No 4G/LTE

brainFireTony — Sun, 07 Aug 2016 23:26:12 GMT

Yup, they used the IMEI when they activated the Sim card.

I'm using the mobile.att.net settings.

Re: No 4G/LTE

Uliwooly — Sun, 07 Aug 2016 23:32:17 GMT

@brainFireTony

Things to try

settings > more > internet settings > accept > restart the phone

and then

settings > more > mobile networks > Access point names > I use:

ATT Nextgenphone

Name: ATT Nextgenphone

APN: nxtgenphone

MMSC: http://mmsc.mobile.att.net

MMS proxy: proxy.mobile.att.net

MMS port: 80

MCC: 310

MNC: 410

Authentication type: Not set

APN type: default,mms,supl,fota,hipri

APN protocol: IPv4

APN roaming protocol: IPv4

Bearer: Unspecified

Re: No 4G/LTE

brainFireTony — Mon, 08 Aug 2016 00:52:27 GMT

That didn't work for me. The Nextgen doesn't give me data coverage. I have to use either the AT&T or Cingular APN to get data. Only getting 3G.

Re: No 4G/LTE

Uliwooly — Mon, 08 Aug 2016 01:23:49 GMT

@brainFireTony

Odd, and the SIM card it's new correct?

What if you pull down the notification bar > pull down again > LTE > is it on?

also

settings > more > Mobile networks > Preferred network type > LTE (preferred)

also double check the 4G LTE coverage in your area.

Re: No 4G/LTE

brainFireTony — Mon, 08 Aug 2016 01:29:39 GMT

Yes to all of them. I had LTE coverage on my previous phone almost everywhere, which was an Xperia Z1.

Re: No 4G/LTE

Uliwooly — Mon, 08 Aug 2016 01:54:35 GMT

@brainFireTony

Which SIM its set for Data ?

Re: No 4G/LTE

brainFireTony — Mon, 08 Aug 2016 03:07:13 GMT

They gave me an LTE supporting micro SIM.

Re: No 4G/LTE

CameronT — Mon, 08 Aug 2016 03:27:50 GMT

Hi @brainFireTony,

Welcome to the community.

Did you mean Nano SIM instead of Micro SIM? The Xperia X Performance uses Nano SIMs.

If you did get a Micro SIM, did you cut it to size?

Re: No 4G/LTE

brainFireTony — Mon, 08 Aug 2016 04:11:14 GMT

Yes, that's what I meant, my apologies. It fits perfectly into the device so I'm pretty sure it's the correct one.

Re: No 4G/LTE

brainFireTony — Tue, 09 Aug 2016 21:56:55 GMT

I still haven't found a solution to this. I'm going to try and send it in hopefully for an exchange or repair.

Re: No 4G/LTE

CameronT — Wed, 10 Aug 2016 01:46:15 GMT

@brainFireTony,

It might be a good idea. You can find your local support teams contact information here: http://www.sonymobile.com/global-en/support/contact-us/contact-info/

Re: No 4G/LTE

SONYDiana — Tue, 23 Aug 2016 17:13:51 GMT

I don't own a SONY phone yet, but I did experience the same issues with my Xiaomi phone It used to work and I noticed it had stopped data. AT&T hates the fact that you use your own phone. I went to the local store many times, we changed SIM cards and APN settings. Nothing worked. Lo and behold, I was on my AT&T account online and somehow the phone did not show up on my account. I made a phone call and was told that the IMEI number was changed by one digit. How? It used to work. The lady corrected it and pretty soon, data was working again. I also threatened to walk across the street and change to TMobile.

The people at the AT&T shops cannot do most of the things that the people on the phone can do. Call them.

Re: No 4G/LTE

stromulous — Wed, 07 Sep 2016 02:49:44 GMT

Hi there. I'm based in Taipei, but I have an AT&T SIM at home. I had a similar issue when I brought my Z2 back to the states. First, the IMEI had to registered with AT&T - and they had some trouble doing that. Second, I ended up using the "ATT Phone" APN - note that they are case sensitive. Here is a link with the source info:

https://www.att.com/esupport/article.html#!/wireless/KB424489

Finally (though this shouldn't be a problem with a Nano-SIM) AT&T apparently still distributes non-LTE compatible SIM cards sometimes. They should have a walkthrough where you can verify the number printed on the card.

I confess I have not yet attempted to use my new X Performance on AT&T yet. I'm not sure if dual-SIM phones might have multiple IMEIs or somesuch that could throw off registration. Might be worth looking in to.

Re: No 4G/LTE

Dryst — Mon, 12 Dec 2016 22:17:46 GMT

The phone is fine. I hope you did not send it in. The problem is the AT&T wireless network. I just ran into this, but I got a fix by taking a quick trip to the wireless store.

AT&T wireless will not allow unlocked phones access to their fastest 4G speeds. The solution is to have them change the IMEI number from your own phone in their system to another approved one. They have these in all wireless stores. They are the demo units. Have a store worker do this for you, reboot your phone, and you will be good to go.

Re: No 4G/LTE

Dryst — Mon, 12 Dec 2016 22:59:32 GMT

I have my Xperia™ X Performance Dual SIM working at 4G speeds on the AT&T wireless network. You cannot get it to work without someone in a wireless store helping you though. The fastest speed AT&T will allow otherwise is H+

Re: No 4G/LTE

brainFireTony — Mon, 12 Dec 2016 23:32:39 GMT

I gave in a long time ago and just sent it in to get a new one. I tried everything you mentioned except asking them to input a different IMEI than my phone. I now have another phone, same model and everything, and the 4G worked right out of the box. Thanks for your help though! Might help others now.