LG G3 D857 no 4G signal

[snowwalker2015]

My G3 is D857 and I bought it from China. I can't find 4G LTE signal in the US. The carrier is T-mobile. I've tried both settings in the *#*#4636#*#* and 3845#*857#. Neither did work. I also tried to search the lte config.apk in the Root Explorer, but I couldn't find it. The device has been rooted. The software info is as follows:

Android 4.4.2
Baseband: MPSS.DI.3.0.c6.2-00008-M8974AAAAANAZM-1
Software version: D85710c-CUO-CN

Can anyone fix this problem? I'd appreciate it very much.

 

[durango992007]

A couple things you can try, reboot the device to see if that helps, or do a battery pull for a hard reset. And since you are with T-Mobile, you can go to a store and say that the SIM card is faulty. I'm not to keen on the software side, but have that problem before on some older phones, that's all I have done and it has solved the problem.

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[CliveEdinburgh]

My G3 is D857 and I bought it from China. I can't find 4G LTE signal in the US. The carrier is T-mobile. I've tried both settings in the *#*#4636#*#* and 3845#*857#. Neither did work. I also tried to search the lte config.apk in the Root Explorer, but I couldn't find it. The device has been rooted. The software info is as follows:

Android 4.4.2
Baseband: MPSS.DI.3.0.c6.2-00008-M8974AAAAANAZM-1
Software version: D85710c-CUO-CN

Can anyone fix this problem? I'd appreciate it very much.

I bought a one plus one 4G. It worked in China etc, but to it to my local o2,store. Was told not compatible here in the UK.

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