> ./simshift --free --noads
Android · on Google Play
Work number and personal number on the same phone? With SIM Shift you decide when each of them can ring. Work goes quiet in the evening and at weekends, your personal number stays reachable. No more office calls at dinner.
Only one SIM? SIM Shift is also a call filter: block and allow lists, by prefix too, and schedules if you need them.
01 — AT A GLANCE
The first screen shows each SIM as a road sign. Red with a bar: it is being filtered right now. Blue: it rings right now. Below are the week's schedule and today's bar with a «now» mark. When a SIM is quiet, SIM Shift tells you when it will ring again.
02 — SCHEDULES
Time slots day by day, more than one a day and even across midnight. Days with the same time slots stay together: change them once and they apply to all, and you choose which days get them. Works with physical SIMs and eSIMs, even if you move them to another slot.
03 — OUT OF HOURS
Out of hours, you decide what happens. Reject, the default: the call is ended and the caller hears a busy tone or goes to voicemail. Silence: the phone does not ring and the call stays among your missed calls, so you can call back. For each SIM you can do the same with callers who are not in your contacts, always or only out of hours.
04 — BLOCK LIST
A number on the block list never rings, not even within hours. You can enter an exact number or a prefix, and you pick country prefixes from a list: with +49 you stop every call from Germany. On Italian SIMs the 0843 (surveys and polls) and 0844 (telemarketing) number ranges go on the block list by themselves. Each entry applies to all SIMs or to just one, can have its own action, and with search you find it again in a flash. The + at the bottom adds an entry; press and hold a row to select more than one.
05 — ALLOW LIST
A number on the allow list always gets through, even if it is not in your contacts. Between the two lists the most precise entry wins: with +49 on the block list and a client in Berlin on the allow list, that client is the only one who rings from Germany. Out of hours, by default, nobody rings, not even the allow list: that is the rule that keeps your evening free. If you like, in the settings the allow list can always ring, for example for a relative or your doctor.
06 — LOG
Every stopped call, day by day and split by SIM, with the reason: out of hours, block list, not in contacts. If the caller is in your contacts you see their name. At the top, today's summary: how many calls were rejected, silenced and let through. A badge on the bar tells you how many were filtered, and from any row you put the number on the allow or block list with one tap.
07 — SETTINGS
A simple index, with the current value next to each entry: the default action of the block list and what the allow list does out of hours, how long to keep the log and whether to also log the calls let through, light or dark theme, language (italiano, français, English), automatic backup to a folder you choose, to get everything back on a new phone. And a tile for the Quick Settings panel, next to airplane mode: one tap pauses the filter for half an hour, one hour or two (the block list stays on), another tap starts it again.
Contacts, lists and log stay on the phone: there is no SIM Shift server to receive them. The app uses only two permissions and explains what they are for before asking: Phone, to know which SIM a call comes in on, and Contacts, to recognise who is in your contacts. The Google Play version does not even have Internet access.
>cat privacy-policy.mdAndroid does not pass calls from hidden numbers to filter apps: SIM Shift cannot stop those. You block them in the Phone app's settings, and SIM Shift takes you there.
SIM Shift uses Android's official «Caller ID & spam app» role, which only one app can hold at a time: if the Phone app's spam filter has it now, switch it to SIM Shift.
Requires Android 12 or newer, with one or two SIMs, physical or eSIM.
Free on Google Play.
