Only trouble! 1

I own this phone now since about 1.5 years, and have (apart from the first 1 or 2 months) only trouble!
Positive:
- Appearance is quite good
- Size fits
(- Camera quality: Back Camera)
Negatives:
- Hangs on constantly
- When someone calls me, I can not go there often because the phone is too slow to screen turn finally
- Back Camera: when the shutter is released immediately and perhaps focused the quality is good, only happens very rarely
Front Camera: In very very good light okay, otherwise very poor
- Battery! Even if I have half the day my phone at school on flight mode, it holds through a single day. During the school year I make hardly anything with the phone, but the battery drained rapidly
It also invites many times not to 100%
- Slow response time
- Apps (especially Whatsapp) take a long time to open

I am for this sch ** ß mobile to 180 because I save actually for another investment, I wanted to spend money on a new phone, but after today listen to music constantly autonomously originated the music I have probably no choice but to me a new look around ..