GOOD QUESTION...SINCE I ALSO DONT USE CHROME,GOOGLE APP,OR PLAY STORE UNFORTUANTLY THESE ARE SYSTEM APPLICATIONS ON 95% OF DEVICES AND CANNOT BE UNINSTALLED WITHOUT ROOT WHICH I DO NOT RECCOMEND I FOUND OUT ROOTED DEVICES ARE MORE TROUBLE THAN THE BENIFIT SINCE MOST DONT DO CORRECTLY AND THIS LEAVES DEVICE IN VULNERABLE STATE MOST CMDS CAN BE RAN USING THE SUDO CMD FROM AN EMULATOR EVEN BUSY BOX CAN NOW BE INSTALLED IN RECENT ANDROID VERSIONS I DUGGEST >SETTINGS>APPS LOCATE CHROME AND DISABLE IT THIS WILL RETURN IT TO STOCK VERSION SO KEEP DISABLED ALSO GPLAY CAN BE DISABLED JUST FIND D REPUATABLE THIRD PARY MARKET THAT UPDATES YOUR APPS AND I HOPE THIS HELPS...

read my reply on same question as you and do same and yes Firefox can be ran with chrome disabled and allot of other Google bloat

an active wifi connection is not needed to monitor you... WiFi networks in range can be used to use your Bluetooth ,NFC ,TETHERING , AND WIFI DIRECT take a look in Windows device manager in your net adapter advance settings and find Bluetooth collaboration this what this means net adapter can be used with Bluetooth as a tandem...

AND A MISCONFIGUED NEIGHBORS ROUTER ARE ALL METHODS NIT TO MENTION MAC SPOOFING ,MAC CHANGER AND PIGGY BACKING OFF OTHER WIFI ACCESS POINTS ,AS WELL AS SPAWNING THE USE OF OTHER APPS WITH WIFI PERMS TO HACK YOU WITH RATS ...REMOTE SOFTWARE DESIGNED TO DO THIS IT GOES MUCH DEEPER MANY WAYS BUT BE AWARE OF LINKS AND PHISHING SITES EDUCATE YOURSELF AND YOU BE FaiIRLY SAFE..

Hi Student2018, Firefox runs on Android, so Google software (and lots of third party software) will still be active on your device even while you are using Firefox. There's no more FirefoxOS.

If you think there is a security problem with your phone, you might seek help on an Android forum, such as

https://forums.androidcentral.com/