Umi touch LTE band activation

Katszzu

Hello

I own a Umi Touch, and i was wondering on how can i enable a specific band on LTE

My celular provider is DigiMobil ( Romania ), they work on  Digi Mobil TDD/2600 MHz/banda 38.

Was looking for a way to enable the option but did not manage to do so

Is there a simple code to enable the specified band ?  Or do I really need to root it and use LTE band calculator to force the band ?

P.s. Managed to fix the low volume on my UMI TOUCH with the engineer mode

All you  need to do is :

Go to your phone dialer and tipe: *#*#3646633#*#*

-->An EngineerMode will appear, swipe left to get to Hardware Testing, tap on Audio and than tap on Normal Mode.

-->Audio_ModeSetting will appear as on picture.

--> select [sph]

-->change values:

lvl 6 = 155 (was 136)

lvl 5 = 140 (was 124)

lvl 4 = 125 (was 112)

lvl 3 = 110 (was 100)

lvl 2 = 100 (was 88)

lvl 1 = 86 (was 76)

lvl 0 = 75 (was 64)

-->Repeat the same for [sph2]

Still looking forward fot the LTE Band change option so I can benefit from 4G.

Thanks

Best regards.