A production-grade Android app for sending very long text as true multi-part SMS (3+ pages), with a strong focus on preventing unwanted MMS conversion.

📱 What This App Does

Long SMS Sender lets you:

✅ Send very long messages as real multi-part SMS

✅ Avoid automatic MMS conversion triggered by some devices/carriers

✅ Pick recipients from contacts or enter multiple numbers manually

✅ Send to one or many recipients with confirmation

✅ See a real-time SMS segment counter

✅ Choose SIM for sending on dual-SIM phones

✅ Schedule messages for a specific date/time

✅ Create recipient groups (save, load, delete)

✅ Save and reuse prepared message templates

✅ Import text from other apps via Share

✅ Use full Persian (فارسی) and English UI + dark/light mode

🛡️ Why It Prevents MMS

This app uses SmsManager.sendMultipartTextMessage(), which:

✅ Sends as true multi-part SMS (not MMS)

✅ Uses no subject line

✅ Adds no attachments

✅ Avoids patterns that can trigger MMS when possible

✅ Keeps long text on the SMS delivery path

Unlike many default messaging apps that convert long text to MMS, this app is designed to keep your message as SMS.

🔒 Privacy Policy

This app does NOT collect, store, or transmit personal data.

✅ No internet permission — fully offline

✅ No ads

✅ No analytics or tracking

✅ SMS is sent directly from your device

✅ Contacts are used locally only for recipient selection

✅ No data is stored on external servers

✅ About dialog content is embedded in-app (no network requests)

Your privacy is a priority. All operations run locally on your device.