Powering the modem after turning off the smartphone
#2
The modem contains a single-core ARM CPU running a Linux-like OS.

The OS on the phone needs to task the OS on the modem to shutdown, when the OS on the phone is being shutdown.

In both OS, power is connected to the phone hardware (other than modem) and modem hardware even when both are shutdown. If both OS are shutdown, then neither is using power or using the battery or causing the battery to drain. There have been cases when the phone OS has shutdown while leaving the modem OS running causing the battery to drain.
  Reply


Messages In This Thread
RE: Powering the modem after turning off the smartphone - by lot378 - 01-05-2022, 07:29 AM

Possibly Related Threads…
Thread Author Replies Views Last Post
  Modem Issues with the Pinephone Temmie19 5 1,674 07-02-2025, 12:50 PM
Last Post: biketool
  FOSS fw problem - PinePhonePro, EG25 modem dukla2000 5 1,599 02-05-2025, 02:30 AM
Last Post: biketool
  Supported Carrier and Modem Bands NachoMomma 4 3,672 03-23-2024, 02:00 PM
Last Post: Kevin Kofler
  power circuit can't charge battery and can't supply enough power for modem or wifi vortex 2 2,218 02-17-2024, 04:15 PM
Last Post: vortex
Bug PinePhone modem keeps "disappearing" Kevin Kofler 14 12,258 03-22-2023, 05:28 PM
Last Post: Kevin Kofler
  modem not working michelinux 0 1,597 02-16-2023, 04:56 AM
Last Post: michelinux
  modem not detected al_x 3 6,280 02-15-2023, 11:17 AM
Last Post: fxc
  firmware udate Quectel EG25-G modem alwi 7 9,531 07-06-2022, 01:43 PM
Last Post: user641
  Need command to tell what modem firmware I am on. purpletiger 4 5,162 07-06-2022, 12:35 PM
Last Post: Zebulon Walton
  The modem does not recognize Korean SIM cards (what?) bdicewk 9 7,750 06-13-2022, 04:12 AM
Last Post: zetabeta

Forum Jump:


Users browsing this thread: 1 Guest(s)