Alcatel SMARTFLIP 4052R | 4G LTE | 4GB Durable flip phone! (GSM Unlocked) - HU

Description

Alcatel SMARTFLIP 4052R
- 4 GB - Expandable with Micro SD card (not included) - 4G LTE
- GSM Unlocked - Color is Volcano Black - Condition is "Heavy Used". Shipped with USPS First Class Mail.
What is MFBI?
Well its a Multiple Frequency Band Indicator
A feature of some newer (2015 and on) networks and phones that enables interoperability between phones and networks that are designed for overlapping frequency band definitions.
Before MFBI, a cellular base station (a "tower") operating at a given radio frequency could only "advertise" to phones that it supported one band definition, even if its frequency fell within two overlapping band definitions. This relatively small technical issue was a large barrier to phone/network compatibility.
For example, U.S. Cellular owns licenses for its LTE network to broadcast at 728-734 MHz. The only band definition that covers that range is "band 12", which covers 728-746 MHz. So the U.S. Cellular network and phones are designed for band 12. Meanwhile, AT&T operates part of its LTE network broadcasting at 734-746 MHz. Band 12 covers those frequencies, but so does band 17, which is defined as just 734-746 MHz, a subset of band 12. AT&T originally designed its network and phones to operate only as band 17. This meant that U.S. Cellular's band 12 phones could not connect to AT&T's band 17 network, even though both were otherwise perfectly capable of communicating at 734-746 MHz. MFBI allows AT&T's network to advertise to phones that it is both band 12 and 17. This relatively simple change allows band 12 phones to connect to AT&T's network.
Supports LTE Bands 2/4/5/12(MFBI)/14
Similar issues affect other frequency bands and other companies' networks, including T-Mobile and Sprint.
MFBI is a relatively new feature, introduced in 2015. Networks must be upgraded to support it. Phones must also specifically support MFBI to take advantage of it; older phones do not support it.
Now onto the actual specks of the phone
ABOUT THE SMARTFLIP: The SmartFlip has a 2.8” internal display that is great for reading emails, text messages and phone numbers. See who’s calling without having to open the phone, thanks to the 1.44” external display. The Alcatel SMARTFLIP comes preloaded with Google Assistant to help you get things done like book appointments, make phone calls, and find answers on the go using just your voice. With the Alcatel SMARTFLIP, enjoy crystal clear calls with HD Voice. Browse the web, check email, and manage your calendar on the go with fast 4G LTE speeds. With Real-Time-Text (RTT), hearing aid compatibility and a large tactile keypad, the SMARTFLIP enables any user to stay easily connected. Be productive at work and home with the SMARTFLIP. Powered by a quad-core processor, expandable memory up to 32GB, and a battery that supports more than 6 hours of talk time (4G LTE).
HOW LONG CAN I EXPECT THE BATTERY TO LAST: This phone comes with a 1350mAh battery that can give you up to 320 hours on standby and up to 7 hours of talk time, Actual battery performance will vary and depends on many factors including 3rd party applications, signal strength, network configuration, age of the battery, operating temperature, features configuration, device settings, and voice, data, and other application usage patterns, these above mentioned times are to give you an idea of what the battery is capable of.
WHAT BANDS DOES THIS PHONE SUPPORT: This phone supports GSM: 850/900/1800/1900, UMTS: 2/4/5, LTE: 2/4/5/12(MFBI)/14, please contact your service provider (prior to pershese) to make sure these bands are supported in your area.
WHAT DOES UNLOCKED REALLY MEAN: Unlocked devices are compatible with GSM carriers the kinds that Use SIM Cards for Service like AT&T and T-Mobile as well as with GSM SIM cards (select prepaid carriers). Unlocked Devices wont necessarily support CDMA Carriers the kinds that don't use sim cards for service like Sprint, Verizon, Boost or Virgin, it's always better to contact your service provider prior to purchasing to confirm their compatibility on the bands supported by this device.