Finally, Apple released iOS 9/8 and I bet most iUsers have updated their iPhone SE/6s/6/5S/5/5C/4S to experience what iOS 8 can bring in no time. Unfortunately, you may find that your iPhone results in inexplicably stuck, endless reboots, continuous restart loop, app flash back, etc.
Namely, your iPhone runs slow after iOS 9/8 update which it's really annoying and frustrating! Therefore, in the following I'll share a great utility with you to speed up your iPhone after iOS 8 update.
In that case, Tenorshare iCareFone (iPhone Care Pro) is exactly what you need! It is an all-in-one iOS cleaning/speedup tool which can optimize your iPhone to its top performance by cleaning up unnecessary files. Moreover, Tenorshare iCareFone works well with Windows 8.1/8/7/Vista/XP and supports all iOS devices including iPhone 5S/5C/5/4S, iPad Air, iPad mini 2 and iPod touch 5G/4G.
Tenorshare iCareFone is so powerful that it provides the following 2 ways to speed up iPhone and optimize iOS to a maximum degree. You can take advantage of either one or both.
First of all, download Tenorshare iCareFone to your PC and launch it after installation. And then follow the detailed steps as below (make sure your iPhone is well-connected with your computer).
After this being done, your iPhone would speed up and run more smoothly without any doubt!
FYI, Tenorshare iCareFone also features in managing files, fixing iOS stuck and repari corrupted iOS system. And if your iPhone 5S/5/5C/4S happens to gets stuck or crashed during iOS 8 update, please refer to How to Fix Frozen iPhone 5S/5/5C/4S during iOS 8 Update.