Firewalls (2 programs)

1. 

   MIUI Security

   • 4.2

   • Free

   Secure and optimize Xiaomi smartphones

   License

   Free Download

   Language

   English

   Platform

   android

   PROS: Efficient device maintenance tool, Clean up useless junk files, Speed up system performance, Identify potential risks

   CONS: Exclusively available for Mi devices only
2. 

   NextDNS

   • 4

   • Paid

   Third-party DNS service

   License

   Paid Download

   Language

   English

   Platform

   android

   PROS: Easy-to-use user interface, Perform unlimited configurations, Large set of filtering options, Includes parental control and SafeSearch

   CONS: Limited queries for the free version