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Cell Signal

Monitoring & Mapping

From simple signal strength widgets up to full-fledged war-driving apps (also see WLAN WarDriving) …

• Mobile Cell Check (5@80) 7 LastUpdate: 2024-09-01
• Cellular Info (5@37) Ǥ 12 LastUpdate: 2019-12-02
• Phone signal information (4.4@2,809) 6 LastUpdate: 2022-07-10
• Signal Guard Free (4.4@2,149) Ǥ 20 5 LastUpdate: 2020-04-26
• Network Survey (4.4@19) 26 2 / Network Survey+ (0@0) 10 LastUpdate: 2021-09-11 Github / Github; advanced version (root needed)
• Network Signal Info (4.3@44,509) Ǥ 16 10 LastUpdate: 2023-05-16
• Network Signal Guru (4.3@4,217) Ǥ 12 1
• Coverage - Cell and WiFi Test (4.2@69,287) Ǥ 18 1
• RF Mobile Trace (4.2@88) Ǥ 23 10
• Cellular-Z (4.1@1,899) 19 LastUpdate: 2023-06-17 cell, WiFi, location
• NoGa Cell 2G 3G 4G (4.1@134) Ǥ 14 11 LastUpdate: 2022-04-25
• Opensignal - 5G, 4G Speed Test (4@443,915) Ǥ 10 3 Wikipedia
• Netmonitor: 5G, Cell & WiFi (4@20,474) Ǥ 20 11
• Cell Signal Monitor (4@6,375) Ǥ 10 13
• NetMonitor Cell Signal Logging (4@2,030) 12
• LTE Discovery (5G NR) (3.9@23,522) Ǥ 29 5
• Tower Collector (3.9@436) Ǥ 17 2 Github; contributes to OpenCellID and Mozilla; IzzyOnDroid recommendation (F-Droid version)
• Network Cell Info Lite & Wifi (3.8@86,380) Ǥ 19 4 / Network Cell Info & Wifi (3.7@12,487; ~EUR 2.25) Ǥ 14 4 Video Intro 6/2018; can export collected cells to MLS, OpenCellId – but also to KML
• NetMonster (3.7@10,725) Ǥ 13 4
• Signal Finder (3.6@3,920) Ǥ 8 4 LastUpdate: 2021-10-14
• inViu OpenCellID (3.6@363) 8 LastUpdate: 2016-11-06 records cell towers incl. coordinates for open-source database, see OpenCellID (map) and in the Wiki
• Cell Towers (3.5@4,483) Ǥ 9 2
• Rx Monitor (3.4@355) Ǥ 12 2 LastUpdate: 2024-06-06
• SignalCheck Lite (3.3@1,101) 7 1 LastUpdate: 2020-11-02 / SignalCheck Pro (2.8@908; ~EUR 4.25) Ǥ 10
• G-MoN (3.2@4,861) Ǥ 13 4 LastUpdate: 2020-03-29
• CellMapper (2.7@3,475) Ǥ 20 2
• Cell Tower Radar (2.7@574) Ǥ 10 3 Github
• SSA Outdoor RF Signal Tracker (2.7@299) Ǥ 16 LastUpdate: 2021-06-12
• RF Signal Tracker (2@2,271) Ǥ 13 4 LastUpdate: 2019-01-17
• Atalaya (0@0) 4 Github; Monitor and get information from nearby cell phone towers
• CellReader (0@0; ~EUR 1.00) 8 1 Github

Bad Signal Alert

Some of the apps mentioned in Monitoring & Mapping include this feature. But the following candidates are specialized in alarming you on bad reception:

• GSM Signal Monitor & SIM Info (3.8@3,878) Ǥ 13 5
• Network Voice Alert! (2@235) Ǥ 16 1

Bad Signal Handler

If your device should take action automatically on bad reception (e.g. switch to airplane mode for a few minutes, then re-check), the following candidates are worth a look:

IMSI Catcher

• SnoopSnitch (3.3@4,019) 16 LastUpdate: 2023-11-01 Intro 7/2019; Vorstellung 4/2018 | 1/2020; Mike’s favorite; detect Stingray Cell Phone Trackers and missing security patches