Receiving incomplete messages on Whatsapp? I am currently using HTC Desire C. Yup, a pretty old model..almost 3 years old now! Lately, I've been having problems on Whatsapp that I don't see anyone else having so I'm wondering if its my phone's fault.

Firstly, every time I open Whatsapp after switching on the Wifi or switching on the phone (say, if the battery died), error message 'Whatsapp is not responding' appears. And not until I press 'Okay' atleast 6-10 times  (not exaggerating) in response to the same message appearing again and again, Whatsapp finally opens and it takes another 5 minutes to start receiving the messages. 

And of the received messages, most of them are incomplete (as in, I receive say, 1 out of 5 sent messages) or I don't receive messages from certain people at all (when they said they have). 

Is there anything I can do to solve this? I'm desperate!
All you can do is: 


Reset your phone.
Try uninstalling the app and delete all files connected with WhatsApp, then reinstall.
Install a custom ROM which is good choice for you.