Contact Graph 89 Customer Service

Why should I report an Issue with Graph 89 - (with TI84 support)?

1. AppContacter will directly Email your issue/feedback to an apps's customer service once you report an issue and with lots of issues reported, companies will definitely listen to you.
2. Pulling issues faced by users like you is a good way to draw attention of Dritan Hashorva to your problem using the strength of crowds.
3. Importantly, customers can learn from other customers in case the issue is a common problem that has been solved before.

1. Graph 89 is an emulator for the TI-83, TI-83 Plus, TI-83 Plus Second Edition, TI-84 Plus, TI-84 Plus Second Edition, TI89, TI89 Titanium, TI92 Plus and Voyage 200 calculators. *Please remember to read the ROM section below before downloading this application!

2. To extract the ROM you can follow the instructions from and by using TiLPII from Google and youtube are also great sources of tutorials and help. Firmware updates (*. 89u, 9xu, *. v2u, *. 8Xu) which are normally used to restore the operating system of your calculator can also be used as a ROM image.

3. The software that runs in your calculator (ROM) is copyrighted by TI, and as such, it can not be distributed by Graph89 or any other emulator for that fact.

4. Added support for: TI-83, TI-83 Plus, TI-83 Plus SE, TI-84 Plus and TI-84 Plus Second Edition using the TilEm2. 00 engine.

5. Graph89 combines two powerful emulation engines which make it the only app in the Android Play Store to support the full range of TI graphing calculators.

6. Graph89 needs permission to look at your Android Account in order to generate a unique ID shown under F1/About.

7. You would be able to install applications by copying the App file to the internal memory of your phone, pressing the 'Back' button and selecting 'Install Application/Send File'.

8. Some of these calculators feature Computer Algebra System (CAS) having the capability to simplify and symbolically solve mathematical expressions.

9. TiEmu, TilEm and Graph89 have been developed independently of Texas Instruments and are not affiliated with TI.

10. Needless to say, you will be very disappointed if you purchase Graph89 without having the ROM file ready.

11. The emulator will provide the same functionality and generate the same results as your real calculator.

1. A huge thank-you to Dritan for this app and all the updates over the years! You've made my life & work a little bit better.App forgets ROM more and more frequently- "Error reading the state file".

2. I'll stick with the free version until I find a better emulator.Once you make the refresh rate the fastest as possible and the speed as possible then the calculator works normally.

3. I wish TI would update the original TI-89 and add a backlight to the display for us older engineers! Fortunately, with this app, my TI-89 rarely leaves its place on my desk, yet I'm never without it (unless the app store decides to cause trouble).

4. My only complaint is the icon that gets put on my phone is so much worse than the one on the play store.My TI 89 Titanium ROM runs just fine, but I couldn't run the 84 Plus SE.

5. The error code: ERR_CANT_OPEN" 5 stars because this app worked fine for a long time on my other phones with no issues.

6. Kinda sucks that it hasn't been updated is such a long time, as I was really looking forward to seeing new features such as the legacy nspire cas with touchpad.

7. Nothing changes on my device, the file is always accessible.This crashed on my new Verizon S20 Ultra saying: "There was an error loading the IMG file.

8. For over 4 years now, whenever I get a new phone I immediately delete the preinstalled calculator and put this on.

9. But the side effect is that the cursor will keep blinking a lot frequently.The emulator works as expected.

10. I do hope the device compatibility update comes soon so I can re-install the app on my new phone.

11. Kinda annoying.ABANDONWARE! Beware! Six years without any updates.

1. Fix Graph 89 Not Working/Crashes/Errors/Unresponsive & Black/White screen:

1. Restart Graph 89: Restarting the app will resolve most errors.
2. Update the Graph 89 App. Here is how:
   1. On Android goto PlayStore » Search for "Graph 89" » Open Graph 89 - (with TI84 support) » click "Update".
   2. On iPhone, goto AppStore » Your profile » Available Updates » Check for Graph 89 » click "UPDATE".
3. Clear Graph 89 - (with TI84 support) app cache: Clearing cached data will force your app to retrieve the latest data directly from Graph 89 servers.
   1. On Android, goto Settings » Apps » Select "Graph 89 - (with TI84 support)" » click Storage » click "Clear Cache".
4. Check Graph 89 app permissions. If any of these permissions required to use your device's features are disenabled, Graph 89 might not work.
5. Uninstall and reinstall Graph 89. If nothing else has worked, completely uninstall Graph 89 then reinstall.
6. Restart your device. Last, restarting your device can often clear most problems causing Graph 89 not working

2. Fix Graph 89 Server issues & Internet Connection

1. Check network connection: An unstable Internet will make Graph 89 be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
2. Disable VPN: VPN can cause connection errors and lead to Graph 89 not working. Make sure all VPNs are off
3. Enable background data: When Background data is turned off, Graph 89 may not be able to connect to the Internet when running in the background.