Find Your Model Number And Serial Number (Imei); Product And Safety Info - Microsoft Lumia 640 XL LTE User Manual

Find your model number and serial number (IMEI)

If you need to contact your care point or your service provider, you may need info such as the model number and the
serial number (IMEI). To see the info, tap
You can also find the info on your phone label, which is located under the back cover.

Product and safety info

Network services and costs
You can only use your device on the LTE 700 (17), 700 (29), 850 (5), 1700/2100 (4), 1800 (3), 1900 (2), 2100 (1), 2600 (7);
WCDMA 850, 900, 1900, 2100; GSM 850, 900, 1800, 1900 MHz networks. You need a subscription with a service provider.
Using some features and downloading content require a network connection and may result in data costs. You may
also need to subscribe to some features.
At the request of your network service provider, your device may collect and report Customer Proprietary Network
Information, which may include information such as: technical configuration, type, destination, location, and amount
of use of any telecommunications services to which you are subscribed. Please see our Privacy Page at
www.microsoft.com/mobile/privacypolicy, or contact your network service provider for more info.
Important: 4G/LTE might not be supported by your network service provider or by the service provider you are
using when traveling. In these cases, you may not be able to make or receive calls, send or receive messages or
use mobile data connections. To make sure your device works seamlessly when full 4G/LTE service is not
available, it is recommended that you change the highest connection speed from 4G to 3G. To do this, swipe
left on the start screen, and tap
For more info, contact your network service provider.
Make an emergency call
Important: Connections in all conditions cannot be guaranteed. Never rely solely on any wireless phone for
essential communications like medical emergencies.
Before making the call:
• Switch the phone on.
• If the phone screen and keys are locked, unlock them.
• Move to a place with adequate signal strength.
1. Tap the start key , and tap
2. Type in the official emergency number for your present location. Emergency call numbers vary by location.
3. Tap call.
4. Give the necessary info as accurately as possible. Do not end the call until given permission to do so.
You may also need to do the following:
• Put a SIM card in the phone. If you don't have a SIM, tap emergency call when you get an error message about
a missing SIM.
• If your phone asks for a PIN code, tap emergency call.
• Switch the call restrictions off in your phone, such as call barring, fixed dialling, or closed user group.
• When you switch your phone on for the first time, you are asked to create your Microsoft account and set up your
phone. To make an emergency call during the account and phone setup, tap emergency call.
Take care of your device
Handle your device, battery, charger and accessories with care. The following suggestions help you keep your device
operational.
© 2015 Microsoft Mobile. All rights reserved.
Settings > about.
Settings > mobile+SIM. Switch Highest connection speed to 3G.
> .
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