Tux Machines — This dirt cheap 4G LTE modem on a USB stick can be hacked to run mainline Linux
Amazon.com: AURSINC MMDVM Hotspot USB HAT Board with Simlpex Hotspot Multi-mode Digital Voice Modem Supports C4FM YSF NXDN DSTAR P25 DMR | Compatible with Windows Linux Android System | BER, DMR, TX
Tools at Team Android
Top 6 Huawei Modem Unlockers on Market [2023 Updated]- Dr.Fone
All About Exynos] ③ A Deeper Look at Modem, Connectivity and Security in Telecommunication | Samsung Semiconductor Global
Top 8 Android Unlock Tool [Full Review]
Bulk Sms Software Smsgadget
Architecture overview | Android Open Source Project