[tsac]

If your saying the phone was the Q10 then the same issue stands. check the amount of memory. The phone standard is 16GB internal memory and should be enough to support a lot of Apps but check anyway.
Also some Apps run continuously and slow down the operation. Just to name a few, GPS Apps, Facebook, Twitter etc. Not all cause problems but if your doing something when one is updating or attempting to run in the background it can slow things down. You might also do a repower to reload the phone in case any corrupted memory is running. Pulling the battery for a few minutes and replacing should clear any junk.