Hello All. I'm new to this forum. I found my way here looking for a solution for my Samsung Galaxy S2. I'm using this phone for almost 2.5 years now and it never gave me any trouble. I haven't rooted my phone yet. Using the firmware provided by Samsung. I'm running Jelly Bean. 2 days ago I was updating my apps through Google Play when my phone turned off automatically. I tried turning it on. The first screen goes by which Says Samsung Galaxy SII GT-i9100. Then the Samsung logo animation goes by when the blue colour covers up Samsung text. The next is Samsung glowing in a blue Halo. The phone gets stuck on that screen. I left it that way and after quite some time the phone switches off automatically and sometimes it just stays like that and the phone gets heated up. I read somewhere that it may be a battery issue so I borrowed my friend's battery but its the same. Shall I go for a new battery? I can enter Recovery Mode and Download Mode. I haven't tried factory reset yet because I have some important contacts and Memo in my phone which sadly I don't have backup of and I can't lose it. So any suggestions that can save my data will be helpful and what shall I do now? Shall I buy a brand new battery or do I have to factory reset it? I badly need my contacts and memo so it'll be really helpful if anyone of you can give a solution where my data is safe and phone starts up. Thanks a lot for taking your time out for helping me!