Nokia 220 4G - Full phone specifications -

4G is the fourth generation of broadband cellular network technology, succeeding 3G and preceding 5G A 4G system must provide capabilities defined by ITU

Yes both the slots are 4g ready but lack dual 4g mode It means you can use only 1 sim on 4g at a time while the other sim automatically turns

mohegan sun free slot play BSNL 4G plus All BSNL Mobile Customers can enjoy high speed Ensure BSNL SIM should be first slot

pg 99 slot Talabat 4G LTE USB WiFi Modem Portable 4G Router with SIM Card Slot High Speed Portable Travel Hotspot Mini Router Unlocked 4G dongle, Black All Sim Support