Hi there! I’m sorry to hear that the Session app keeps crashing when you try to send a text, and that rebooting your phone caused it to crash again. That definitely sounds annoying. To help you better, could you tell me a bit more?

- What kind of phone are you using (brand and model)?
- Which version of the Session app do you have installed?
- Does the app crash immediately when you open it, or only when you try to send a message?
- Did the crashing start happening after an app update or any system change?

Meanwhile, I’ll guide you through some steps that often help resolve app crashes on Windows mobile devices or emulators, since you mentioned "cell" which I want to confirm. Here’s what to try:

1. Update the Session App
Make sure you have the latest version of Session installed. Developers often release fixes for crashes in new updates.

2. Clear App Cache and Data
Sometimes corrupted cache or data cause the app to crash. To clear it:
- Go to your phone’s Settings > Apps & notifications > Session.
- Tap Storage & cache.
- First, try Clear cache and test the app. If it still crashes, try Clear storage/data (this will log you out and erase local data, so make sure you have backups if needed).

3. Check Device Storage & Memory
Low storage or RAM can cause apps to behave erratically. Ensure your device has enough free space and close other running apps.

4. Reinstall the App
Uninstall Session completely, then reinstall it fresh from the official source.

5. Check for OS Updates
On Windows or Android devices, make sure your system software is up to date, as compatibility issues can cause crashes.

6. Try a Different Network
Sometimes network issues cause instability. Switch between Wi-Fi and cellular data if possible.

If you’ve tried these or the app continues to crash, please let me know exactly what happened after the reboot crashed your device. Are you still able to open Session at all? This info will help me assist you further or escalate to our support team if needed.

Looking forward to your reply!