ZTE Corporation — device issues

Address:

53403

I purchased an n9137 from walmart about 2 months ago. This device receives multiples of the same texts. Counted over 50 of one. This is the slowest phone i've ever had apps take a minute to open. The memory isn't enough to update the phone. I only installed one app and deleted a game that came on the phone and still am not able to update this device.