Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not as good as I'd hoped

I've been using the phone for 12 months and it hasn't been as good as I initially thought. Granted, this was a top of the line phone a year ago and it wouldn't have been possible to get anything much better.Gripes: (1) Voice quality is not that clear. A colleague also complained about this. (2) It randomly re-boots, including in the middle of calls. Something seriously wrong here. (3) Photos are noisy although this is not unexpected in a fixed-focus device. (4) The 'slider' form-factor is a pest. I found my previous clam-shell phone easier to operate.Update - after 12 months this phone has now been 'scrapped'. No one in the family is interested.