How To Convert Your Nigeria Phone Number To USA number.1) Get a Nigerian sim card, register it and insert in your phone
2)Turn on your phone and allow it to fully boot
3) Go to contact and locate the additional menu (More options) in your contact
4) Go to Settings under your contact
5) click or tap or touch or finger the settings option and locate My Number
6)Go to the given or shown digits and tap or finger or click on it then delete the first 3 digit (prefix).
7) Replace with +1 and add any other digits you so desire but it’s always advisable to use 914
8 ) ensure you use the 914 in reverse order (I. E written from the last to first digit to the first), with this it can automatically bypass the network framework and get routed as a terminating roaming call
9) Save and dial any number to verify the result
10) Repeat process till you get result
11) You’re welcome