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Best SIM based calling CRM: 7 apps that dial from your own number

The best SIM based calling CRM places every call through the card already in the handset, labels which SIM was used and copes when the network cuts a call. Calling CRM tops this list, followed by six other apps that also skip virtual numbers.

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  • No virtual numbers
  • Dual SIM details
  • Dropped-call handling
Updated
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Product illustration with sample data
TL;DR · SHORT ANSWER

What is the best SIM based calling CRM?

A SIM based calling CRM dials on the handset’s own card. Calling CRM leads for dual SIM teams; Dialmio and Telecalling Software suit Android-only staff.

The list

Best SIM based calling CRM: the 7 apps, compared on SIM handling

Every app here calls from the phone’s own SIM. The comparison is in the details: two SIMs in one phone, a clear label on each call and what happens when the signal drops mid-ring. We set the order.

  1. 1

    Calling CRM

    callingcrm.in

    Best for: staff who carry one phone with a work SIM and a personal SIM

    Before dialling, a rep may tap SIM 1 or SIM 2, or tell the app that card one is always for work. Afterwards the call list labels each entry with its card, even on old Android builds, and only the cards you tick are synced, which keeps a personal line out of the office records.

    When the network kills a call before it rings, the dialer tries that number again, up to twice, before giving up on it.

    Worth knowing: On iPhone the app cannot read the handset’s own call list.

    See Calling CRM
  2. 2

    RMDialer

    rmdialer.com

    Best for: SIM-calling teams that also need a developer API

    rmdialer.com builds its auto dialer and telecalling CRM around the user’s own SIM and adds a call-log API for teams that sync calls elsewhere.

    Worth knowing: Its pages stick to the SIM route; a WhatsApp calling option is not described.

    RMDialer vs Calling CRM, in detail
  3. 3

    Telodial

    telodial.com

    Best for: teams that want SIM calls and WhatsApp calls in one log

    Telodial keeps the SIM as the main route, yet lets a rep switch a list to WhatsApp calling, capped at 20 a day unless changed. App calls from WhatsApp, Meet or Zoom are listed in the history beside the mobile ones.

    Worth knowing: Its site does not describe how it treats dual SIM phones.

    Telodial vs Calling CRM, in detail
  4. 4

    Dialmio

    dialmio.com

    Best for: Android teams that want SIM calling without a virtual line

    dialmio.com runs its call management CRM and auto dialer on the SIM in each Android phone, so there is no cloud number to rent.

    Worth knowing: There is no iPhone app, according to the site.

    Dialmio vs Calling CRM, in detail
  5. 5

    Telecalling Software

    telecallingsoftware.com

    Best for: buyers who want an explicit no-virtual-number promise

    The brand at telecallingsoftware.com says plainly that it uses the callers’ own SIM and does not provide virtual numbers or an IVR, and that the app keeps working offline.

    Worth knowing: It also states it does not record call audio.

    Telecalling Software vs Calling CRM, in detail
  6. 6

    AutoDial CRM

    autodialcrm.in

    Best for: teams that switch between SIM and WhatsApp for the same list

    AutoDial CRM gives each list two possible routes, the handset’s card or WhatsApp. A sync setting can also ignore any call that is not with a lead or client, which suits staff on their personal SIM.

    Worth knowing: On iPhone it asks buyers to confirm with support how dialling works.

    AutoDial CRM vs Calling CRM, in detail
  7. 7

    NLCaller

    nlcaller.com

    Best for: SIM callers who also run conference calls

    nlcaller.com covers SIM calling with its own dialer and auto dialer, conference calls and redial with up to three retries.

    Worth knowing: Its site does not mention internet calls in the log or dual SIM labels.

    NLCaller vs Calling CRM, in detail

This list is written by Calling CRM. The order is our editorial choice, with our own app first; use each "Best for" line and the table to pick what fits you. Facts about other apps come only from their own websites, checked 23 October 2026. Other companies are independent of Calling CRM.

Features

Best SIM based calling CRM comparison table

Only SIM-related points. "Not stated" means the app’s own site does not say.

SIM calling details, checked 23 October 2026
AppOwn SIMWhatsApp as a routeiPhoneBest for
Calling CRMYes, per-call SIM choiceYes, daily capYes, no call logDual SIM staff
RMDialerYesNot statedYes, no call logAPI users
TelodialYesYes, 20 a day defaultYesMixed call types
DialmioYesNot statedNoAndroid teams
Telecalling SoftwareYes, no virtual numbersNot statedNoOffline areas
AutoDial CRMYesYesYes, ask supportSwitching routes
NLCallerYesNot statedYes, no call logConference callers

How we chose the best SIM based calling CRM

Calling CRM sits at number one because this site belongs to it, so weigh our entry accordingly. The remaining six were chosen because each one routes calls through the handset’s card rather than a hosted line. What we say about them was copied from their product pages in late October 2026, never from reviews.

Every entry answers three SIM questions, though the placing is our own: what happens with two SIMs in one phone, whether each call shows which SIM placed it, and what the app does when a call fails because of the network.

SIM based calling CRM vs a virtual number: what to check

  • Customers see the caller’s real mobile number, which they may already have saved. A rented line looks unfamiliar.
  • No number has to be bought, verified or ported; the SIM is already there.
  • When reps bring their own handsets, confirm their private card stays invisible to the office.
  • If you need an IVR menu or one number ringing many desks, a SIM app is the wrong tool; read SIM calling vs cloud telephony.

Best CRM for mobile phones that use two SIMs

Dual SIM handsets are common in sales teams, and they cause two quiet problems: calls labelled with the wrong SIM, and personal calls leaking into work reports. The dual SIM CRM page shows how Calling CRM separates the two, and the SIM calling CRM page covers the rest of the setup.

Best SIM based calling CRM: limits of this list

Kept out on purpose:

FAQ

Best SIM based calling CRM FAQ

What is the best CRM for mobile phones with a SIM?

One that rings out on the card inside the handset and files every call under a lead by itself. Calling CRM handles both jobs, with dual SIM labels on top.

Is Calling CRM the best SIM based calling CRM?

It is the best fit here for dual SIM phones, because of per-call SIM choice, SIM labels and per-SIM backup. An Android-only team with simple needs may be fine with Dialmio.

Do SIM based calling CRMs work on Android only?

Not always. Two of the seven, Dialmio and Telecalling Software, need Android for callers; the remaining five also list an iOS app.

Which SIM based calling CRM keeps personal calls private?

In Calling CRM you untick the personal card so it never syncs, and list family numbers to keep out entirely. AutoDial CRM offers a leads-and-clients-only sync.

Can a SIM based calling CRM record calls?

A SIM app usually borrows the handset’s own recorder file rather than taping the call itself. One of the seven, Telecalling Software, keeps no audio at all.

What happens when the network drops a call in a SIM based CRM?

Calling CRM redials a network-dropped call up to two times before marking the lead not reached. The other sites do not describe this.

Can a SIM based calling CRM also call over WhatsApp?

Calling CRM, Telodial and AutoDial CRM can work a list over WhatsApp instead of the SIM. Telodial states a default of 20 such calls a day.

Can a SIM based calling CRM place calls when mobile data is off?

Yes, the voice call rides on the ordinary mobile network. Data is only needed later, to sync the call and its notes to the account.

Does a SIM based calling CRM need a new phone number?

No. It uses the number on the SIM each caller already has, so nothing has to be bought, verified or ported.

Which SIM based calling CRM shows the right SIM name on each call?

Calling CRM shows the SIM name on every call in the history, including on older Android versions. The other sites do not mention SIM labels.

Read next

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