New cell phone

I have been having issues with my android phone running slow and locking up for a couple of minutes at a time.  I did a factory reset and the behavior returned after about a month.  T-Mobile replaced it under warranty and the refurbished one they sent me started to do the same thing after about a month.  This past Monday, the screen cracked on the refurbished phone causing over half the display to stop working.  I was feed up with these problems and spent the money to get a new phone on a payment plan.  I am now using an iPhone and will see how well it works for me.