Hi am new android user and i use samsung galaxy ace (gt-s5830).i live in India and bought it in India! I want to root my device to install apps in sd card cause my internal memory(181mb) is getting full!! <My android version is 2.21,baseband version is s5830DDKC1,Kernel version is 220.127.116.11-perf root@SE-S605#1,Built number is FROYO.DDKC1..(actually i don't understand these terms)> I just googled and found ways to root my galaxy ace,,..before i root my phone i need to know can i unroot my phone to its normal state(as it was before unrooting) and reclaim my warranty,,i heard that unrooting is also possible but in some case after unrooting also the manufacture can identify that the device is rooted before by seeing in boot loader,,and i don't want my device to be without warranty and at the sometime i need to store and use many apps..so i have to root my device!!..perfect unrooting is possible to reclaim my warranty!!