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SmsLoc 1.4.0

SMS based location query

filecart Android
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5this week
FreeFreeware
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SmsLoc 1.4.0 screenshot
SmsLoc 1.4.0 screenshot

About SmsLoc

SmsLoc is an application that queries the location of contacts without the use of mobile data. It uses GPS to retrieve current position and SMS for requests/responses.

SMS request format: `Loc?`
SMS response format: `Loc:LAT,LON,ASL,UTC_S,V_KMH,ACC_M,BAT_PCT`, where:
- `LAT, LON` are latitude and longitude in degrees rounded up to 4 decimal places.[^1]
- `ASL` or Above Sea Level is the absolute altitude as reported by the GPS in meters
- `UTC_S` is the timestamp of the GPS fix in seconds. The timestamp corresponds to the time of the actual fix, and not when SMS was received.
- `V_KMH` is the speed in kilometers/hour
- `ACC_M` is the accuracy reported by the GPS chip in meters
- `BAT_PCT` is the battery percentage of the device sending the response

License: GPL-3.0-or-later
Release info New Release on Dec 28, 2025
Release notes Added permissions:
[x] READ_PHONE_STATE so resend on network alive can work (see #29)

Bugfixes:
[x] Fix debug print in startForeground (#26)
[x] Back pressed was ignored

Enhancements:
[x] Treat anything but 'Activity.RESULT_OK' as SMS sent error (#27)
- Responses: Retry sending SMS automatically (#29) -> waits for network and resends the sms
- Requests: Show AlertDialog, ask the user if resend
[x] Support for multiple location requests arriving during a single GPS fix
Listing dataF-Droid

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