Fix common service and device issues.
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Learn more about your ZTE Z221
Find out how to block calls, use Wi-Fi Calling, and more.
Call waiting & 3-way
Make & receive a call
Use hotspots, connect to Wi-Fi, turn data on or off, and more.
Signal & cellular data
Get device details and technical specs.
Insert SIM card
Keyboard & typing
Learn the home screen
My wireless number
Notifications & icons
Power device on or off
Update device software, check data use, and manage device memory with ease.
Explore ways to resolve device issues or reset your device.
Set up and adjust your email or messaging settings with ease.
Send & receive messages
Learn how to view, close, or remove apps on your device.
Browse the Web
Remove an app
Explore what your device can do and how to use it.
Record a voice memo
Look at photos, watch videos, listen to songs, and more in just a few taps.
View & share photos or videos
Take a video
Take a picture
Learn how to find your device and secure your info.
Lock & unlock
Set or change password security
Check your battery life, adjust sound, set up alerts, and more.
Date & time
Ring & vibrate settings
Learn where to find the version of software running on your device, and to update it.
View device software version
Learn how to view your recent call history.
View call log