I have an Acatel U5 and it is a steaming pile of feces.
Often just fails to charge and requires a reboot to 'see' the charger, it's very, very slow and frequently just ignores incoming calls that I only notice once I get the voicemail notification.
The screen is poor in light conditions and the phone has the weird habit of muting itself for no reason and frequently drops wifi and goes to 4g eating my limited data plan
I *really* want to replace it with something that isn't a pile of junk but finances are tight and it is working (for certain values of work).