Check the status page
Open status.openai.com. If there's an incident, the app will error too — wait and retry rather than troubleshooting the app.
ChatGPT errors, explained
ChatGPT app errors
If the ChatGPT app crashes or throws errors on iPhone or Android, the usual fixes are: update the app, check your connection, sign out and back in, clear the app cache or reinstall, and confirm the OpenAI status page is green. This guide walks through each step — and shows how to use the web app at chatgpt.com to tell whether it's the app, your account or OpenAI.
What's causing it
Likely causes of ChatGPT app errors
App crashes and errors on iPhone and Android come from a few common causes. Use this to narrow down which one before trying fixes.
| Likely cause | Whose side | What to do |
|---|---|---|
| Outdated app version | You | Update the app from the App Store or Play Store. |
| Connection issue | You | Check Wi-Fi/mobile data and turn off any VPN. See the network error guide. |
| Stale session | You | Sign out and back in to refresh your session. |
| Corrupted app data | You | Clear the app cache (Android) or reinstall the app, then sign in again. |
| OpenAI incident | OpenAI | Check status.openai.com; if there's an incident, wait and switch models meanwhile. |
⚠️Always start here: open status.openai.com. If OpenAI reports an incident, the app error is on their side and there's nothing to fix locally — wait it out (and keep working elsewhere).
Don't just sit there
ChatGPT app broken? Keep working for free.
If the app keeps erroring, or there's an OpenAI-side incident, you don't have to stop. A multi-model workspace lets you switch to another AI and finish what you were doing — then go back to ChatGPT once the app is working again.
Keep working
MultipleChat AI
multiplechat.aiWhen the ChatGPT app crashes or errors, switch to Claude, Gemini or another model in the same place and keep going for free — no waiting for OpenAI to recover. Compare answers across models too.
OfficialOpenAI Status
status.openai.comThe first place to check: live incidents, outages and maintenance.
OfficialOpenAI Help
help.openai.comOpenAI's own troubleshooting and error articles.
GuideIs ChatGPT down?
chatgpterror.comHow to confirm an outage and what to do.
Step by step
How to fix ChatGPT app errors
If status.openai.com is green, the problem is usually the app or your device. Work through these in order — they clear most iPhone and Android app errors.
Update the app
Update ChatGPT from the App Store or Play Store. An outdated version is a common cause of crashes and errors.
Check your connection
Make sure Wi-Fi or mobile data is stable, and turn off any VPN or proxy that may be interrupting the connection.
Sign out and back in
Sign out of the app and sign in again to refresh your session and clear a stuck login state.
Clear cache or reinstall
Clear the app's cache (Android), or delete and reinstall the app, then sign in again to replace any corrupted data.
Try the web app to isolate
Open chatgpt.com. If the web works but the app doesn't, it's the app; if both fail, it's your account or OpenAI.
Related guides: network error · login problems · something went wrong · is ChatGPT down? · all error codes
All error guides
ChatGPT errors: every guide
All error codes400, 401, 403, 429, 500, 502, 503, 1020.
Something went wrongThe generic error, fixed.
Network errorStops mid-reply or won't send.
Too many requests (429)Rate limits and how to avoid them.
Error code 1020Cloudflare access denied.
At capacity / 503Server overloaded.
Login problemsCan't sign in or verify.
App errorsiPhone & Android crashes.
Is ChatGPT down?Confirm an outage.
Error FAQEvery common question.
MethodologyHow this guide is researched.
FAQ
ChatGPT app errors — quick answers
Short answers on why the app crashes or errors on iPhone and Android, and how to fix it.
Why does the ChatGPT app keep crashing?
App crashes and errors are usually fixed by updating the app, checking your connection, signing out and back in, clearing the app cache or reinstalling, and confirming the OpenAI status page is green. An outdated app version or a flaky connection are among the most common causes on both iPhone and Android.
How do I fix ChatGPT app errors on iPhone?
Update the app from the App Store, check your internet connection, sign out and back in, and if it still fails, delete and reinstall the app then sign in again. Confirm status.openai.com is green, and try chatgpt.com in a browser to see whether the problem is the app or your account.
How do I fix ChatGPT app errors on Android?
Update the app from the Play Store, check your connection, sign out and back in, and clear the app's cache (or reinstall) if it persists. Confirm status.openai.com is green, and open chatgpt.com in a browser to check whether it's the app, your account or OpenAI.
Should I reinstall the ChatGPT app?
Reinstalling is a good step if updating, signing out and back in, and clearing the cache haven't worked. It replaces any corrupted app data. You'll need to sign in again afterwards, so make sure you know your login details first.
Is it the ChatGPT app or my account that's broken?
The quickest way to tell is to open chatgpt.com in a browser. If the web app works but the mobile app doesn't, the problem is with the app — update or reinstall it. If both fail, it's more likely your account or an OpenAI-side incident, so check status.openai.com.
Why does the ChatGPT app say network error?
A network error in the app usually means it can't reach ChatGPT reliably — a weak Wi-Fi or mobile connection, or a VPN/proxy interrupting it. Check your connection, turn off any VPN, and try again. See the network error guide for more on mid-reply drops.
Does clearing the app cache fix ChatGPT errors?
It can. Clearing the app's cache (on Android directly, on iPhone usually by reinstalling) removes corrupted temporary data that can cause crashes or errors. It's worth trying after updating and signing out and back in haven't helped.
Is a ChatGPT app error caused by an OpenAI outage?
It can be. If OpenAI is having an incident, the app will error too. Check status.openai.com: if there's an incident, wait it out. If it's green but only the app fails, the issue is the app or your device, not OpenAI.
Why won't the ChatGPT app let me sign in?
If the app won't sign you in, update it, check your connection, and sign out then back in; if that fails, reinstall and try again. You can also sign in at chatgpt.com to confirm your account works. See the login problems guide for more, and only ever enter your password on the official chatgpt.com.
How can I keep working when the ChatGPT app is broken?
If the app keeps erroring, or there's an OpenAI-side incident, use a multi-model workspace like MultipleChat to switch to Claude, Gemini or another model and keep going for free until the app is working again.