Kosher Phone Carrier Compatibility (US & Israel)

Will a kosher phone work on your carrier?

The Atom works with every carrier in the United States and Israel. There are no network restrictions, no separate builds and nothing to check — if a SIM works in your area, it works in the Atom. If you are buying the Atom you can stop reading here and go straight to the phone.

The CAT S22 Flip is different. It ships in two builds that are not interchangeable: a GSM build for the T-Mobile and AT&T networks, and a Verizon build with CDMA-less provisioning enabled. Ordering the wrong one means the phone will not activate. A third category — government-subsidised plans such as Tracfone, SafeLink, Assurance Wireless, Q Link and TruConnect — cannot accept a bring-your-own kosher phone at all, because those programmes only activate devices they supply.

Use the search box below to look up your carrier, or read the full lists further down the page.

Full carrier list

Every carrier below has been checked against the CAT S22 Flip. The Atom works on all of them, including the plans marked not compatible for the CAT — with one exception: government-subsidised programmes supply their own handsets and will not activate any bring-your-own device.

Kosher phone plans: what to look for

A kosher phone does not need a special plan. Because filtering is enforced on the device by KosherDroid OS rather than by the network, any ordinary SIM works — and you are free to choose on price rather than on whose filter you are renting.

Three things are worth checking before you sign up:

• Data allowance. Without a browser or social media, data use collapses. Waze, messaging and email rarely need more than 1–2 GB a month, so the cheapest tier is usually the right one.
• Bring-your-own-device support. Confirm the carrier activates BYOD handsets. Every carrier in the tables above does, apart from the subsidised programmes.
• Hotspot policy. If a plan's value depends on tethering, remember the phone it tethers to is unfiltered. Many families deliberately choose a plan without hotspot.

Travelling between the US and Israel? The Atom takes an Israeli SIM without any change to its filtering, so one phone covers both countries.

Carrier FAQ

Does a kosher phone work on T-Mobile?

Yes. Both the Atom and the GSM build of the CAT S22 Flip work on T-Mobile and on every MVNO that runs on T-Mobile's network, including Mint Mobile, Metro, Ultra Mobile, Simple Mobile, Lyca, Tello and Ting.

Does a kosher phone work on Verizon?

The Atom works on Verizon with no special configuration. The CAT S22 Flip requires the Verizon build with CDMA-less provisioning; the GSM build will not activate on Verizon or on Visible, Xfinity Mobile, Spectrum Mobile, Total Wireless or Page Plus.

Does a kosher phone work on AT&T?

Yes. Use the T-Mobile/AT&T build of the CAT S22 Flip, which also covers Cricket, Consumer Cellular, H2O, PureTalk and Red Pocket's AT&T service. The Atom needs no specific build.

Why won't Tracfone or SafeLink work?

Those are government-subsidised programmes. They activate only the handsets they issue, so no bring-your-own phone — kosher or otherwise — can be added to the line. Moving to an ordinary prepaid carrier is the only route.

Will my kosher phone work in Israel?

Yes. The Atom works on Cellcom, Partner, Pelephone, Hot Mobile, Golan Telecom, 019 Mobile, Rami Levy, We4G and the MVNOs riding on those networks. Filtering is unaffected by changing the SIM.

Can I keep my number?

Yes — number portability is handled by your carrier, not by the phone. Port as you would with any other device.

Still unsure? Email us with your carrier and plan and we will tell you which build to order — or compare both phones side by side first.