In crowded apartment buildings, your JioFi is fighting for "airspace" with every other router nearby. Go to .
However, "unlocking" the M2S is more often about removing the software bottlenecks that slow down your Jio connection. Here is how to actually make it better. 2. Update the Firmware
Keep it away from microwaves, cordless phones, and large mirrors.
Change the from "Auto" to a specific number (usually 1, 6, or 11 are the cleanest).
Look for the and switch it from "Auto" to "Manual." Use Google DNS: Primary 8.8.8.8 , Secondary 8.8.4.4 .
If you are using it with a laptop, stop using WiFi entirely. Connect the JioFi M2S via a high-quality USB cable.
Technically, the JioFi M2S is carrier-locked to Reliance Jio. While there are various "firmware hacks" floating around the internet claiming to make it work with Airtel or Vi, many of these can or void your warranty.