I have a problem with receiving calls and text messages due to a weak 3G signal, now I want to make my phone and force it to work on the 2G mode only, but since I am on lollipop 5.0.1 I don't have this as a choice. I tried using this code:
#*#*4636#*#* but it doesn't work with me. I also tried a few apps from the play store (e.g. Toggle Network Type 5.0 which was specifically made for Lollipop) but nothing works.
My phone is rooted.