Originally Posted by skycd
... just do not know what to do and whether to give it a service?
Yes, a phone service should get you sorted out.
Kind of like taking the car in for an annual service.
If you use is for more than 12K hours though, you will need to service it more often than once a year.
Make sure the phonecanic uses a good quality SIM card, and checks the working parts out to Blackberry spec.
Hope this helps.