NetMonster - NetMonster is a networking app by Michal Mrocek that comes up with features to enable you to get detailed information about your current network right on your mobile phone screen.
Fastah 4G Finder - Fastah 4G Finder app contains features through which you can access a color map to get an idea about the speed of the internet on your current network.
Network Analyzer - Network Analyzer app lets users discover new high-speed WiFi networks to connect to them and download files of big sizes in a matter of seconds.
tPacketCapture - tPacketCapture is packet capture app. It captures packets without using any root permissions. It uses VpnService provided by Android OS.
Mojo Packets - Wireless Troubleshooting Made Easy
Network Cell Info - Network Cell Info is a cell network monitor and measurements log tool (4G+, LTE, CDMA, WCDMA, GSM).