Connect & transfer 57
To manually set your SD card to internal storage tap Apps 
 >   Settings > Storage & USB, then select your SD card 
and tap Menu   > Settings > Format as internal.
Caution:  If your SD card is set to internal storage, it is 
formatted and encrypted to protect your information. If 
you want to use it as portable storage, or in another device, 
you’ll need to format it. Before doing so, please remember 
that formatting erases all the data stored on your SD card.
Tip:  Use a Class 10 SD card.
Note:  Your phone supports SD card up to 128 GB.
Mount or unmount memory card
To mount an SD card, just put it in your phone (see “Put in 
the cards & power on” on page 5).
To unmount your SD card (so you can take it out of your 
phone), tap Apps   >   Settings > Storage & USB. then 
tap   next to the SD card name.
Caution:  Do not remove an SD card while your phone is 
using it or writing files to it.
Erase memory card content and format card
To delete all the information (music, photos, and files) 
from your SD card and re-format the card, tap Apps   >  
Settings > Storage & USB, tap the SD card, then tap Menu   
> Settings > Format.
Virtual Private Networks (VPN)
A VPN lets you access files on a secured network (like 
an oce network with a firewall). Contact the network 
administrator to ask for VPN settings, and any additional 
apps or other requirements.
To enter VPN settings, tap Apps   >   Settings > More 
> VPN. Tap   to add a new VPN. Choose the type of 
VPN and enter settings from the network administrator. 
The network is stored in the VPN list so you can select it 
whenever you need to connect.
Mobile network
You should not need to change any network settings. 
Contact your service provider for help.
To see network settings options, tap Apps   >   Settings 
> More > Cellular networks.
To switch networks, tap Apps   >   Settings > More 
> Cellular networks > Network operators and select a 
network.
Note:  Your phone supports most networks. Contact your 
service provider for help.