gsm only

  1. Y

    How can I get a Galaxy S4 to run in 2G?

    My friend wants to be able to run his Galaxy S4 in 2G mode but nothing we try is working. He has Android 5.0.1 and no guides seem to work for it. I tried the *#*#4636#*#* on my Galaxy S6 Edge running 5.1.1 and it worked like a charm. But when input on his phone, absolutely nothing happens. Can...