Please check if your questions are in this FAQ list. If you have issues other than these, please contact for help.

While contacting customer support, please include the following information:

  • Your order number and IMEIs.

  • Videos/ images dipicting your problems (for a better diagnosis).

General Questions

#1 Where to find the IMEI number 1 and 2?

1. Go to Settings ->System ->About Phone ->IMEI number 1 and 2.
2. Look for the IMEIs on the box of the phone (if you still have it).

#2 How to update my phone?

Settings ->System ->About phone ->Wireless update.

#3 Why can't I receive the latest update on my phone?

Please follow these steps to clear cache before searching for the update again:
Settings -> App Notifications ->See all apps ->Show System (top right corner with 3 dots) ->Wireless update-> Clear Data and Cache

#4 How to erase my personal data/ factory reset my phone?

Settings ->System ->Reset Options ->Erase all data (factory reset).

#5 How many keyboard languages does Titan and Titan Pocket support?

English, English(UK), German, French, Italian, Portuguese, Spanish, Russian, Dutch, Japanese, Simplified Chinese, Traditional Chinese(Zhuyin, Cangjie, Quick input).

For the keyboard input of other languages, we may consider adding them in the future if we receive enough demands.

On the other hand, Android system supports a wide range of languages, with which you will be able to turn on touch screen input as a supplement.

Telecom Compatibility

#1 How do I know if the phone can work with my SIM card in my country?

1. Check the feedback from other users here.

2. Please find the the phone's supported bands in product specs and check if those meet your sim-card carrier's needs or contact your carrier.

Due to different carrier's policy regarding to unlocked phones, LTE wireless service may not be available even if listed bands are supported by your carrier. When this happens, please contact your carrier for more details.

#2 Is the phone compatible with Verizon?

Our phone can work fine in Verizon network. However, as it is not certified by Verizon, you cannot activate your new SIM card with it. Please activate the new SIM card with another Verizon certified device and then use it in your Unihertz phone.

Technical Issues (Problem Shooting)

#1 How to solve the problem of black screen when calling?

Please follow the guide to do a micro-calibration for your phone (you can also contact us for a video guide):

1. Please clear the dust in your proximity censor hole on top of your phone.

2. Input *#3377# in the Dial-up interface.

3. Click Distance calibration.

4. Follow the guide to finish the process.

#2 What to do when some of apps in my phone don't run in the background while the screen is off?

Please permit the apps to run in the background by activating them in the following three settings:

1. Settings ->DuraSpeed

2. Settings ->Intelligent assitance ->App blocker

3. Settings ->App&notification ->See all apps ->this app ->Battery ->Battery optimization and Background restriction->Don't optimize

You can also watch a video guide here.

#3 I have upgraded my smartphone to the latest Android OS, am I able to downgrade to the older version?

It is not advised to downgrade your smartphone since there might be compatibility issues.

#4 Why does my 4G SIM card display 3G after the setting?

Please contact your operator and check the APN parameters.

#5 Why can't I access the Internet and send MMS.

Please follow the steps here to set the APN.

#6 Why I can hear others but they can't hear me?

1. Go to Sound Recorder app and run a recording test.

2. Check whether your SIM card works well on the other phone.

#7 Why others can hear me but I can't hear them?

1. Please check if this only happened to some or all of friends you called.

2. Stay in the same location and insert your SIM card into another Android phone and the same issue arises.

3. Turn on call record in the call interface to record a call, then check whether the sound recorded is normal.

#8 Why my battery runs out so quickly?

1. Please send us a full screenshot of your battery usage in Settings ->battery ->battery usage.

2. Follow these steps to capture the battery log and send it to for further analysis.

Repair and Warranty

#1 When returning the phone back for analysis, do I have to send the accessories (such as charger and cable) back?

For repair, please send without the accessories.

For replacement or refund, please send with accessories in one package.

#2 Is broken glass issue covered by warranty? Can I replace the screen by myself?

The broken glass is not covered by warranty.

Please send send the smartphone back to us after negotiating with as we do not provide phone screen separatel. Repair or replacement fee may apply.

#3 Is my replaced phone covered by warrranty?

The repaired/ replaced device will get extra 90 days warranty or the remaining original warranty period, whichever is longer.