Hello!
My name is Stanislav. Would You so kind please, help me!?
I bought T-Mobile One S by ebay.com, but I live in Kazakhstan, Almaty, and oure operators used UMTS 900 format. I know, that T-Mobile phones used UMTS 1700/2100 format. How can I upgrade my T-Mobile One S radio v.1.13.50.05.31_10.30.50.08L, to able use UMTS 900 format? Hope on Your helpfull!
Sorry for my english!)