unlock w910i

hello

how to unlock w910i?

click here quick answer

For free - NO solution for now
Pay - Top Sony - Buy Ultimate Unlocker LOGs or
Unlock Phones by IMEI - Top Sony Forums or
Top Sony - Buy D-Unlocker LOGs

is it going to void the warranty?

If you unlock your phone by IMEI , then not , but if you unlock your phone with other two ( D-Unlocker or D-Ultimate Unlocker ) , then yes.

Have a nice day