Gsm Cellular Carriers

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NETGEAR 4G LTE Modem – Instant Broadband Connection | Works with AT&T and Alternate Carriers (LB1120)

 (NETGEAR 4G LTE Modem – Instant Broadband Connection | Works with AT&T and Alternate Carriers)
The NETGEAR 4G LTE Modem gives you a simple, fail-safe connectivity solution for your devices or services, avoiding disruptions in broadband when your fixed wire line goes down. Simply connect your existing wire line broadband connection to this modem to provide an automatic LTE broadband backup connection.

Samsung Galaxy S8 (G950u GSM only) 5.8" Unlocked Smartphone for All GSM Carriers - Midnight Black (Certified Refurbished)

 (Samsung Galaxy S8 (G950u GSM only) 5.8
This Samsung Galaxy S8 SM-G950U 64GB GSM Unlocked Android Smartphone is Certified Refurbished. It is 100% functional and in near perfect cosmetic condition with the possibility of a few light hair marks. It will NOT come in its original packaging but will include a certified cable and UL approved power adapter. Headsets, SIM card and manual are NOT included. This Samsung Galaxy S8 SM-G950U 64GB GSM Unlocked Android Smartphone is fully functional with T-Mobile, AT&T and all other GSM networks. It will NOT work on Sprint, Verizon, Boost, Virgin Mobile or any other CDMA network.

Apple iPhone 6, GSM Unlocked, 16GB - Space Gray (Refurbished)

 (Apple iPhone 6, GSM Unlocked, 16GB - Space Gray)
What's in the box: Certified Refurbished iPhone 6 Space Gray 16GB Unlocked , USB Cable/Adapter. Comes in a Generic Box with a 1 Year Limited Warranty.

Desktop Wireless Telephone GSM Quadband Fixed Phone for Home and Office 2 Sim Card Desk Phone SMS Support Wireless Phone

 (Desktop Wireless Telephone GSM Quadband Fixed Phone for Home and Office 2 Sim Card Desk Phone SMS Support Wireless)
Ideal GSM Wireless Desktop Telephone for home or office This cost-effective cordless telephone allows users to get connected to voice communications using the mobile phone network, instead of landline. After inserted 2G SIM card and charged battery, you can make and receive calls, as well as messages. Features: ✔ Cordless telephones,large easy-to-read 2.4 inches LCD screen with backlight. ✔ Powerful capacity of signals receiving, steady performance; ✔ Calls lock; Clear talking setting; ✔ User-friendly interface, easy to use ✔ Low consumption, energy saving. Comes with wall charger and rechargable 1000 mAh battery; ✔ Support : Contacts; Message; Calls logs; last number redial;up to 300 phone numbers Kindly Note (Important): ✔ Only work for GSM network (GSM850/900/1800/1900MHz).Please make sure your SIM card is satisfied with these 2 requirements: 1. support GSM 2. compatible with 2G network. Please confirm with SIM card seller if your SIM card meets above 2 requirements. ✔ The working status is highly related to the network signal condition. It is normal that sometimes signal is weak. It can not be judged as defective telephone in this case. You may wait a while or move your location to get stronger signal. ✔ The antenna is built-in, no extern...

Cell Phone Signal Booster for AT&T T-Mobile GSM 3G 4G LTE - Boost Cellular Voice and Data Signal in Home by Tri-Band 700ATT/850/1900MHz Band 2/5/12/17 Repeater kit and High Gain Panel/Yagi Antennas

 (Cell Phone Signal Booster for AT&T T-Mobile GSM 3G 4G LTE - Boost Cellular Voice and Data Signal in Home by Tri-Band 700ATT/850/1900MHz Band 2/5/12/17 Repeater kit and High Gain)
Description:Frequency Range:Band12/17: 698~716MHz, 728~746MHzBand 5: 824~849 MHz, 869~894 MHzBand 2: 1850~1910MHz,1930~1990MHzPackage:1 * Tri Band 850/1900/700AT&T Booster;1 * Indoor Panel Antenna with 6M Cable;1 * Outdoor Yagi Antenna with 15M Cable;1 * Power Adapter;1 * Mounting Screw Kit;1 * English User ManualLED Indicator:Continuous green : normally working;Flashing green: The input signals is too weak, if it is still working, you can ignore it. We suggest you install the yagi antenna higher and adjust the direction, keep it towards the near cell tower.Continuous red: The power supply is shut down when self-oscillation over 5 minutes. We suggest you keep outdoor and indoor antenna at least 10meters, separate them with a wall, and turn down 10dB gain. Final, plug the power supply, the LED light will turn green.Note:1.This booster only works with cellphone on 850/1900/700MHz(Band 2/5/12/17), please check with your cellphone frequency and band first. If you are not sure, call your carrier or contact us to confirm it.2.The signal booster can only boost cell phone signal if there is at least 1-2bars signal outside. If there is no signal outside in your area, it won't work.This is a Consumer device. Before use, you must register this device with your wireless provider and have...

From GSM to LTE-Advanced Pro and 5G: An Introduction to Mobile Networks and Mobile Broadband

 (From GSM to LTE-Advanced Pro and 5G: An Introduction to Mobile Networks and Mobile)
A comparative introduction to major global wireless standards, technologies and their applications From GSM to LTE-Advanced Pro and 5G: An Introduction to Mobile Networks and Mobile Broadband, 3rd Edition provides technical descriptions of the various wireless technologies currently in use. It explains the rationales behind their differing mechanisms and implementations while exploring the advantages and limitations of each technology. This edition has been fully updated and substantially expanded to reflect the significant evolution in mobile network technology occurring over the past several years. The chapter on LTE has been extensively enhanced with new coverage of current implementations of LTE carrier aggregation, mobility management, cell reselection and handover procedures, as well as the latest developments in 5G radio and core networks in 3GPP. It now features additional information on the TD-LTE air interface, IPv6 in mobile networks, Network Function Virtualization (NFV) and Narrowband Internet of Things (NB-IOT). Voice-over-LTE (VoLTE) is now treated extensively in a separate chapter featuring coverage of the VoLTE call establishment process, dedicated bearer setup, header compression, speech codec and bandwidth negotiation, supplementary service configuration and Vo...

Samsung Galaxy Tab A 7.0" 8GB (WiFi + Cellular) SM-T285M, 4G LTE Tablet & Phone GSM Unlocked - International Model (Silver)

 (Samsung Galaxy Tab A 7.0
Network Technology GSM / HSPA / LTE DISPLAY Type IPS LCD capacitive touchscreen; Resolution 800 x 1280 pixels Platform OS Android OS, v5.1.1 (Lollipop) Chipset 1.5Ghz Quad Core Processor 1.5GB RAM Memory Card slot microSD, up to 200 GB (dedicated slot) Internal 8 GB Camera Primary 5 MP, f/2.2, Video [email protected], Secondary 2 MP, f/2.2 2G GSM: GSM850, GSM900, DCS1800, PCS1900, 3G UMTS: B1(2100), B2(1900), B4(AWS), B5(850), B8(900), 4G FDD LTE: B1(2100), B2(1900), B3(1800), B4(AWS), B5(850), B7(2600), B17(700), B28(700) International version of the tablet PC that comes with no warranty in the US. Compatible with Most GSM Carriers like T-Mobile, AT&T, MetroPCS, etc. Will NOT work with CDMA Carriers Such as Verizon, Sprint, Boost

Samsung Galaxy Note 9 Factory Unlocked Phone with 6.4" Screen and 128GB (U.S. Warranty), Ocean Blue

 (Samsung Galaxy Note 9 Factory Unlocked Phone with 6.4
The new super powerful Note. The largest battery in a Note, ever. When you have a long-lasting battery, you really can go all day and all night.

Unlocked Cell Phone, 5.5" Ultrathin Android 6.0 Octa-Core 512MB+4GB GSM 3G WiFi Dual SIM Dual Camera Smartphone (Black)

 (Unlocked Cell Phone, 5.5
Easy to set the language: just plug the SIM into your phone and turn it on, the phone will display your local language directly   Specification:    Battery capacity: 2200mAh    Battery voltage: 3.7 V    Charge limit voltage: 4.2V    Operating system: Android 6.0    CPU: MTK6750 Octa-Core processors    Frequency size: 5.5 inch ultra QHD screen    Rear camera: 2.0MP with Double LED flash    Front camera:2.0MP    Wireless connection: Wifi/Bluetooth       Video format:MP4       Audio format:MP3    Other functions:Torch,Flashlight,Record,FM radio,Audio codec,Video codec,WAP,MMS,SSM,SMS,CPRS    Advanced features: Wireless wifi (GPRS) online HD video    SIM card: Double card double stay    Frequency band:    2G: GSM900\1800\850\1900      3G: WCDMA850/2100    Resolution: 960x480    Touch screen: Capacitive touch screen, capacitive multi-touch    Other: Intelligent Round back cover and comfortable feel    Memory: 512MB RAM+4GB ROM       Maximum memory expansion 32G(TF card not include)    The adapter input: 100-240V;AC 50/60hz ;0.35A        The adapter output: DC5V;2A

UMIDIGI Z2 Cell Phone - Android 8.1-6GB+64GB - 16+8 MP Dual Camera - Dual SIM Unlocked Smartphone for All GSM Carriers - 6.2" FullView Display - Twilight Black

Gsm Cellular Carriers (UMIDIGI Z2 Cell Phone - Android 8.1-6GB+64GB - 16+8 MP Dual Camera - Dual SIM Unlocked Smartphone for All GSM Carriers - 6.2

UMIDIGI Z2 Cell Phone - Android 8.1-6GB+64GB - 16+8 MP Dual Camera - Dual SIM Unlocked Smartphone for All GSM Carriers - 6.2" FullView Display - Twilight

Gsm Cellular Carriers (UMIDIGI Z2 Cell Phone - Android 8.1-6GB+64GB - 16+8 MP Dual Camera - Dual SIM Unlocked Smartphone for All GSM Carriers - 6.2

H2O Unlocked 2-in-1 SIM Card for all GSM Carriers (Standard + Micro Size)

Gsm Cellular Carriers (H2O Unlocked 2-in-1 SIM Card for all GSM Carriers (Standard + Micro)

Sony Ericsson T300 (Unknown GSM Carrier - read) Cellular Phone, handset only

Gsm Cellular Carriers (Sony Ericsson T300 (Unknown GSM Carrier - read) Cellular Phone, handset only)

LG G7 ThinQ LM-G710VM 64GB Aurora Black! Fits U.S.Cellular+GSM Carriers!

Gsm Cellular Carriers (LG G7 ThinQ LM-G710VM 64GB Aurora Black! Fits U.S.Cellular+GSM)

LG G7 ThinQ LM-G710VM 64GB Platinum Gray! Fits U.S.Cellular+GSM Carriers!

Gsm Cellular Carriers (LG G7 ThinQ LM-G710VM 64GB Platinum Gray! Fits U.S.Cellular+GSM)
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