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Your connectivity safety net.

ON by SIMO gives compatible iPhone and Android users an additional mobile data connection for the moments when your Wi-Fi or primary cellular network can't keep up.

Download on the App Store GET IT ON Google Play

No carrier change. No extra device. Start with ON Free.

iPhone & Android
eSIM activation
Works alongside your carrier
LIVE Team call · 24:07
ON · BACKUP ACTIVE
Still connected
Your primary signal dropped.
ON kept your data flowing.
SAFETY NET ON

Stay connected when it matters most.

Why ON

A second layer of connectivity, built in.

ON adds backup mobile data to the phone you already use — without replacing your carrier or carrying another device.

A backup for your phone

An additional mobile data connection kicks in when your Wi-Fi or primary cellular service is weak, congested, or unavailable.

No carrier change

ON works alongside your current service. No switching providers, phone numbers, or primary plans.

No physical SIM or hotspot

Digital app and eSIM activation, right from your phone. Nothing extra to buy, charge, or carry.

Ready in advance

Activate ON before you need it, so you're prepared before an outage or coverage problem ever shows up.

Start free

ON Free lets you download, activate, and experience the safety net at no cost before you ever upgrade.

Confidence, day to day

Less reliance on a single carrier or Wi-Fi network for work, family, and the everyday things that depend on connection.

When you need ON

Reliable connectivity at home, on the go, and beyond from a brand you trust.

For the moments when your main carrier or Wi-Fi is not available.

Uninterrupted connectivity

Stay online without interruption, during important moments, such as Zoom calls.

Abroad without roaming

Stay connected abroad without roaming fees or local SIM cards.

Connect more devices without another carrier contract

Use ON to add connectivity to compatible iPads, laptops, and family devices without opening another line or signing a new agreement with your carrier.

Choose your plan

How much connection confidence do you want?

Start with ON Free. Upgrade anytime for more backup data, more flexibility, and more confidence.

ON Free

$0 /mo
200MB backup data

The safety net for essential connection moments. Download, activate, and experience ON risk-free.

Start FREE today

ON Ready

$3.99 /mo
1GB backup data

For people who want everyday connection protection they can count on. Affordable, simple, ready.

Get ON
Most popular

ON Everyday

$8.99 /mo
3GB backup data

For users who lean on backup connectivity more often across work, family, and travel days.

Get ON

ON Max

$24.99 /mo
10GB backup data

The most connection headroom — for users who want the biggest safety net across Wi-Fi and cellular gaps.

Get ON

No contract. No credit card to start. eSIM for compatible iPhone & Android.

Who ON is for

Built for people who can't afford to be disconnected.

Professional working on a laptop and phone

Always-On Professionals

Remote workers, entrepreneurs, freelancers, and salespeople whose income and reputation depend on reliable connectivity.

Protect the meetings and moments your work depends on.

Family staying connected together

Connected Families

Parents, caregivers, and students who rely on connectivity for school, schedules, transportation, and coordination.

Keep your family connected to what the day requires.

Person outdoors ready with their phone

Connectivity-Prepared

People who want a backup for outages, weak coverage, congestion, severe weather, and unexpected interruptions.

Be ready before your primary connection lets you down.

Get started

Three steps to always-ready connection.

1

Download ON

Get the ON by SIMO app on your compatible iPhone or Android in a couple of taps.

2

Activate your free plan

Set up your eSIM digitally from your phone — no store visit, no physical SIM.

3

Stay ready

ON stays ready in the background so you have backup data when your connection can't keep up.

FAQ

Your questions, answered.

Do I have to change my carrier?+

No. ON works alongside your current wireless service. You keep your provider, your phone number, and your primary plan — ON simply adds a second layer of mobile data.

Does ON work on iPhone and Android?+

Yes. ON is available for compatible iPhone and Android devices and activates digitally via eSIM, right from the phone you already use.

Do I need a separate device or physical SIM?+

No extra hotspot and no physical SIM. Activation is digital through the app and eSIM, so there's nothing additional to buy, charge, or carry.

What happens when my Wi-Fi or cellular signal is weak?+

ON provides an additional mobile data connection to help you stay connected when your Wi-Fi or primary cellular service is weak, congested, or unavailable.

How much does ON cost?+

You can start free with ON Free. When you're ready for ongoing protection, ON Ready gives you 1GB of monthly backup connectivity for only $3.99/month, with larger plans available.

Can I set ON up before I actually need it?+

Yes — that's the idea. You can activate ON in advance so your backup connection is ready before an outage or coverage problem ever happens.

Your connection may fail. Your day doesn't have to.

Start with ON Free and keep a connectivity safety net ready on the iPhone or Android you already carry.

Download on the App Store GET IT ON Google Play

Free plan available. No credit card required. eSIM for compatible iPhone & Android.