Sony Xperia XZ1 User Manual

To format the memory card
1 Find and tap  Settings > Storage .
2 Tap  SD card  > 
, then tap  Storage settings  > Format  > Erase & format .
All content on the memory card gets erased when you format it. Be sure you  

To restore your data using a computer
1 Unlock the screen of your device and connect it to the computer using a USB
Type-C cable.
2 Open the Xperia

To edit a backup file
1 Find and tap  Settings > System .
2 Under  Xperia

Downloading applicationsDownloading applications from Google Play

Internet and networks
Browsing the web The Google Chrome

Wi-FiUse Wi-Fi to surf the internet, download applications, or send and receive emails.Once you have connected to a Wi-Fi network, your device remembers the network
and automatically connects to it the next time you come within range.
Some Wi-Fi networks require you to log in to a web page before you can get access. Contact the relevant Wi-Fi network administrator for more information.
Available Wi-Fi networks may be open or secured. Secured networks are indicated
by 
 next to the Wi-Fi network name....

Increasing Wi-Fi Signal Strength
There are a number of things you can do to improve Wi-Fi reception:

To find  the MAC address for your device
1 Find and tap  Settings > Network & Internet  > Wi-Fi .
2 Tap  Wi-Fi preferences  > Advanced .
3 MAC address  is displayed in the list.The Wi-Fi Mac address is also displayed under Settings > System > About phone > Status >
Wi-Fi MAC address.
WPS
WPS (Wi-Fi Protected Setup) is a wireless networking standard that helps you establish secure wireless network connections. WPS makes it easy for you to set up
WPA (Wi-Fi Protected Access) encryption to secure your...

To share your mobile connection by One-touch portable hotspot
1 Make sure that both devices have the NFC function turned on, and that both
screens are active.
2 Find and tap  Settings > Network & Internet  > Hotspot & tethering .
3 Tap  One-touch portable hotspot . Hold the devices together so that the NFC
detection areas of each device touch, then tap  CONNECT.This function only works with devices that also support NFC Wi-Fi tethering.
To share your cellular data connection with another Bluetooth...

Controlling Data UsageYou can keep track of the amount of data transferred to and from your device over
your cellular data or Wi-Fi connection during a given period. For example, you can
view the amount of data used by individual applications. For data transferred over
your cellular data connection, you can also set data usage warnings and limits to
avoid additional charges.If you are using a device that has multiple users, only the owner (that is, the primary user)
can adjust data usage settings....