I used this phone few years back and this phone is good to use.This phone released in 2010.This phone have a display of 4 inch.This phone Weights 135. Grams. Battery of this phone is Li-lon 1500 mAh.This phone have a built in memory of 1GB. Memory card support for this phone is 16 GB. If we think about the RAM of this phone, it will be 256 MB RAM.Camera of the phone is 8.1 MPx for rear shoot.CPU of the phone named Sony Ericsson Xperia X10i will be 1024.0 MHZ.I used this Sony Ericsson Xperia X10i for a long 5 years with out much repair.