Why is my HTC device crashing?
If you notice your HTC device crashing periodically, it is due to a combination of text message language, OS version and software. It is more likely to happen with messages written in languages with Devanagari characters, such as, but not limited to: Hindi, Marathi, Nepali, Kashmiri and Punjabi. The problem is also likely to broadly effect devices running on Android 4.0.3 and 4.0.4.
HTC is actively working with us to solve this problem.
We expect a fix will be available soon. Until then, the only solution is to ask the contacts you are receiving these messages from to use a different language that is supported (e.g. English).
WhatsApp Support Team