Karbonn a25 is very bad phone because its internal memory is too small therefore phone will be hang and slow.the prosser of this phone works very slow.it also a small size ram it is a big issue of hangig problems.camera quality is bad camera is just only 5 mega pixels but it dont work like 5mp it works like 2mp.in this phone we missed 4g connectivith internet.and we missed android lolipop os also.so friends dont buy this phoe.i suggest xiomi redimi 2