List of Lan Tian Mobile (LTE at Home) series posts: Legal LTE Network at Home for $100 Legal LTE Network at Home with Open5GS (current post) In my previous post , I built a legal LTE network using the US CBRS band and Magma LTE core network software . Regarding "legal": I am not a lawyer or a wireless expert. Based on my research into the relevant policies and regulations, my entire setup should be legal. However, I take no responsibility if you encounter any legal issues after following the instructions in this post. I chose Magma at the time because the CBRS LTE base station I bought was originally used for the Helium Mobile network, and Nova Labs/Helium Mobile uses Magma for its CBRS core network . This ensured that Magma was compatible with my base station. However,...
Legal LTE Network at Home for $100
List of Lan Tian Mobile (LTE at Home) series posts: Legal LTE Network at Home for $100 (current post) Legal LTE Network at Home with Open5GS Yes, you read that right. Without the need for Faraday cages or signal-blocking measures, you can build a legal LTE network at home (in the US) for around $100, capable of transmitting continuously 24/7. Regarding "legal": I am not a lawyer or a wireless expert. Based on my research into the relevant policies and regulations, my entire setup should be legal. However, I take no responsibility if you encounter any legal issues after following the instructions in this post. CBRS Band: Unlicensed LTE/5G Band in the US The challenge in building your own LTE network lies not in the technology but in legally acquiring radio spectrum resources....
Fix China Telecom 4G Roaming on AOSP ROM by Changing APN
Since the support life of my OnePlus 8T's official ROM is about to end, I flashed Nameless OS, a Lineage OS based third party Android ROM, onto my phone. But after flashing the ROM, I found that my China Telecom SIM card cannot roam on the 4G network of local mobile service providers, only 2G or 3G work. Since the local providers are recently shutting down 2G and 3G networks, the roaming cellular signal strength is really bad. I experience a high latency on receiving or sending messages, nor can I use VoLTE to make calls normally. I tested other Lineage OS based third party ROMS, and experienced the same problem. After numerous attempts, I found that the problem seems to be with the phone's APN settings. I use the term seems to be because while changing APN settings fixed my problem,...