@hlbkv I can't give you expert advice about your device unfortunately. Generally speaking from my limited experience (I have only one phone with UT, a Fairphone 5) when UT is installed the installer may have trouble running unless the device is set manually in fastboot. In these cases I have used 'sudo reboot fastboot' under UT to get to the desired fastboot mode. If UT don't start you may have success using the phone controls (IIRC starting while pressing Down (or Up ?), or using the device boot menu. Additionaly it's indeed necessary to specify the target (detection don't work). In short, your current state is cause of concern of course, but not yet of despair.

@gpatel-fr That´s perfect! Thank you very much for solving this stubborn problem. Now I can put the Pixel 3a into ‘Nokia 3210 mode’ with a single click. Calls and text messages work, and the battery lasts at least three days in this mode. #!/bin/bash # ==================================================================== # NOKIA 3210 MODUS: CPU throttling + All offline services (Pixel 3a) # ==================================================================== if [ "$EUID" -ne 0 ]; then echo "ERROR: Please run the script using: sudo $0" exit 1 fi echo "Enable Nokia 3210 mode..." # 1. Force CPU cores into power-saving mode for governor in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do if [ -f "$governor" ]; then echo "powersave" > "$governor" fi done echo "[✓] CPU throttling enabled." # 2. Turn off Wi-Fi nmcli radio wifi off echo "[✓] Wi-Fi disabled." # 3. Turn off location tracking (GPS) sudo dbus-send --system --type=method_call --print-reply --dest=com.lomiri.location.Service /com/lomiri/location/Service org.freedesktop.DBus.Properties.Set string:com.lomiri.location.Service string:IsOnline variant:boolean:false echo "[✓] Location tracking disabled." # 4. Turn off Bluetooth rfkill block bluetooth echo "[✓] Bluetooth disabled." # 5. Turn off mobile data sudo -u phablet DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/32011/bus" dbus-send --session --type=method_call --print-reply --dest=com.lomiri.connectivity1 /com/lomiri/connectivity1/Private org.freedesktop.DBus.Properties.Set string:com.lomiri.connectivity1.Private string:MobileDataEnabled variant:boolean:false echo "[✓] Mobile data disabled." # 6. Greenline-Service stop at user level XDG_RUNTIME_DIR=/run/user/32011 sudo -u phablet systemctl --user stop greenline.service 2>/dev/null echo "[✓] greenline.service stopped." echo "------------------------------------------------" echo "Success! CPU, wireless modules and GPS are in sleep mode." sleep 3

@vince.vs The path is. Not a (full) filesystem path Rather this is probably the left-overs of some app that shared status info to the greeter infographic, which you have since uninstalled.

@moodroid The “Prevent background suspension” setting should be set to OFF. As described in the Ubuntu Touch Wiki. By “Power Save,” I mean the following: Set CPU cores to half load Turn off Wi-Fi Turn off mobile data Turn off Bluetooth Turn off location services Enable 2G (optional) With these settings, the device enters deep sleep mode and consumes less than 22 mA. (1-2% battery consumption at night) If this is not the case, you will need to check for faulty services or configurations that are preventing deep sleep mode. In my case, I created a script with a log file that records the power consumption of the idle device in a text file. It was always over 200 mA. Only after cleaning up faulty services linked to installations did the consumption drop to ~22 mA. The battery on my 9-year-old Pixel 3a now lasts about 4 days with moderate use. I call it “NOKIA 3210 mode.” You can be reached via text and phone for days on a single battery charge. If needed, you can also take pictures, check emails and calendar events, send texts, or make calls, and all other features of a modern smartphone are available. (Navigation, internet, NextCloud, cloud music...)

I wouldn't use a META product if there were alternatives. But there are a lot of people who are very resistant to change. There are groups for their kids' school activities: soccer, tennis, music, and so on. If you use Ubuntu Touch every day, a lightweight QML app like Greenline is perfect. You can check WhatsApp messages when needed. In an emergency, you can send a message like, “I'll be 10 minutes late.” Personally, I prefer a WhatsApp alternative that is fast and stable, uses few resources, and adapts well to changes in WhatsApp’s data structure—such as the Go library, whatsmeow, protobuf structures, and WebSocket conditions on the servers. I don’t need features like video or forms. If someone wants all of WhatsApp’s features (including META AI) on Ubuntu Touch, then they have the wrong device. Keep Greenline lean, efficient, and adaptable to changes at Meta for a long life on Ubuntu Touch. Many people and groups still need some time before they’re ready to switch to alternatives.