iPhone 6 and 6 Plus IPWS crazy problem

Hello, I have iPhone 6 with crazy problem, when i connect it to iTunes to restore, it restore iPhone 6 plus instead of 6 only, then black bright screen only and show TRUST on iTunes. some times iTunes accept to restore it manually for iphone 6 IPWS, it download fine and screen back to work fine with apple logo but iPhone keep restarting randomly with many problems with wifi and network searching.

Any ideas!!!!

Thanks