Apps like Mobile Internet Quality Test

Here are some great alternatives to Mobile Internet Quality Test by 한국지능정보사회진흥원(NIA) :
Internet Speed Test, 4G Speed
Internet Speed Test, 4G Speed
★4.4
Internet Speed Test 4G 5G WiFi
Internet Speed Test 4G 5G WiFi
★4.4
Wifi Speed Test Wifi Analyzer
Wifi Speed Test Wifi Analyzer
★4.3
Speed Test Internet SpeedSmart
Speed Test Internet SpeedSmart
★4.6
Speed Check Light 5G/4G/WiFi
Speed Check Light 5G/4G/WiFi
★4.9
5G & Wi-Fi internet speed test
5G & Wi-Fi internet speed test
★4.6
V-SPEED Speed Test
V-SPEED Speed Test
★4.8
RFBenchmark Lite
RFBenchmark Lite
★4.4
WiFi Internet Speed Test
WiFi Internet Speed Test
★4.4
WiFi net signal strength meter
WiFi net signal strength meter
★4.4
Speed Test: Internet Speedtest
Speed Test: Internet Speedtest
★4.1
Network speed test & dBm chart
Network speed test & dBm chart
★4.2
5GMARK Speed & Quality Test
5GMARK Speed & Quality Test
★4.0
Internet speed & signals meter
Internet speed & signals meter
★4.6
Speed Test - Wifi/4G/5G
Speed Test - Wifi/4G/5G
★4.8
Speed test 4G 5G WiFi & maps
Speed test 4G 5G WiFi & maps
★4.7