Asus zenfone 2 a very nice handset I bought which I using by 2 years nothing found problem in that it is very noce working.and I like its featurrs and updates improvement is very nice and 2gb ram its fabulous, and now I will used it till my happiness with it, the very first 2gb ram phone was lauched in asus that is asus zenfone 2, after that they launched 2laser, zenfone 5, zenfone 3 now, and they launched a 4gb ram of phone, which was first time very popular.