hello nairalanders out there. Please, I have a an oppo phone. given to me and is marked as having 3g and 4g LTE but has failed to receive either of the two (3g or 4g LTE). I have use mtn ,Airtel and Glo sim cards which brought 3g and 4 g in another phone of mine. Also, I have used *$*#4636#*#* to set it to 4g,3g and 2g network preference .I only shows edge E. What am I doing wrong? can anyone advise me. Thanks in anticipation

Oppo 6607, also known as Oppo U3 is a China version supporting only network bands in China, TD-SCDMA is 3G that works only in China, what we have here is WCDMA, and the LTE bands too are not supported in Nigeria.

Thanks questechie for you response. I am very greatful , no need to waste my time on it then.

I have had the same problem with a xiaomi lte China version phone thanks for the explanation