In crowded apartment buildings, your JioFi is fighting for "airspace" with every other router nearby. Go to .
While a true carrier unlock is risky, you can significantly "unlock" the potential of your JioFi M2S by switching to Google DNS, choosing a manual WiFi channel, and using USB tethering whenever possible. unlock jiofi m2s better
If you are using it with a laptop, stop using WiFi entirely. Connect the JioFi M2S via a high-quality USB cable. In crowded apartment buildings, your JioFi is fighting
Keep it away from microwaves, cordless phones, and large mirrors. In crowded apartment buildings