Hi, I was wondering if still is ok to activate new SIMs with SIM800L (2G) here in NY and NJ as December 2021. I understand T-mobile is shutting down 2G end of next year, and not accepting new subscriptions already, but yet wondering if using the Hologram SIM would work. My regular TMobile cell phone, still works here in NYC when restricted to only 2G mode. Using a cell tower app and restricting to only 2G, I see quite a number of Towers operating in PCS1900, and transfer rates around 40Kbps up/down.
I just tested a couple inexpensive SIM800L modems first with no SIM and after with a recently activated Hologram SIM card. But the AT+COPS=? consistently shows +COPS: ,(0-4),(0-2) , that I understand no networks are visible. I believe I read that all compatible networks should show with this command regardless you have a SIM card or not. Tried another number of things, as modem mode, making sure rf is on, etc, and nothing. There is a chance that both have some problem as I don’t see evidence of the 2A current burst that should happen when trying to transmit. I even use an oscilloscope, and the max current I register is an average of 80mA at 4V, when it may be trying to transmit. The 2A bust is about 10% duty cycle, that I imagine should draw at the very least 200mA during these tries. But max is 80mA.
Any experiences will be very appreciated.
Today I am getting a new SIM7080G modem that is more expensive, but operates with LTE IoT NB and Cat-M, and I will compare.