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Calling CRM: the SIM calling CRM that dials from your own number
A SIM calling CRM is a CRM whose calls travel over the mobile SIM card inside each phone instead of an internet line. Calling CRM is built on that model, so the person you ring sees the mobile number they saved last time.
- No virtual number to rent
- SIM choice on dual SIM phones
- Correct SIM name in history
What is a SIM calling CRM?
A SIM calling CRM places business calls through the phone’s own SIM and logs them to leads. Calling CRM is a SIM calling CRM for Android and iPhone teams.
- Calls use the caller’s normal mobile number
- Pick SIM 1 or SIM 2 per call, or set a business default
- Each logged call names the SIM it went out on
SIM calling CRM benefits over rented numbers
Why many phone-led teams keep calls on their own SIM cards.
Familiar caller number
Customers who saved the salesperson’s number see that same number ring.
Works on any mobile plan
No extra telephony contract or internet calling line is needed to start.
Right SIM in every log
Calls show the correct SIM name, even on older Android versions.
Dropped-call redial
During list dialling, a call lost to weak signal before ringing is placed again, at most two more times.
International numbers
Country codes are handled for display and dialling, so foreign leads dial cleanly.
How SIM calling CRM works in Calling CRM
The CRM sits on the phone, and the phone’s SIM carries the call.
Pick the business SIM
On dual SIM handsets, choose SIM 1 or SIM 2 per call or set a default for work.
Dial from the lead
Tap call on any lead, reminder or list. The call goes out on the chosen SIM.
Log against the lead
The call, its SIM, type and duration attach to the lead, ready for the after-call sheet.
SIM calling CRM features table
Features that depend on the SIM inside the phone.
| Feature | What it does | Best for |
|---|---|---|
| SIM per call | Ask which SIM to use each time, or use a default business SIM | Dual SIM phones |
| SIM name in history | Labels every logged call with the SIM it used | Owners auditing calls |
| Call type learning | Learns how each handset brand labels its calls, so direction and missed status stay accurate | Mixed handset brands |
| Missed-call call-back | One tap returns a missed call with a SIM choice | Inbound enquiries |
| Backup by SIM | Choose which SIMs back up to the account | Personal plus work SIM |
| SIM auto dialer | Calls a list one by one on the chosen SIM | Outbound lists |
SIM based calling CRM vs a virtual number
A virtual number system routes calls over the internet through a number your business rents. It suits help desks that need menus and queues. A SIM based calling CRM skips that layer: the salesperson’s own mobile places the call, and the CRM records what happened.
The trade-off is clear. You give up shared inbound lines and menus; you keep the number customers recognise and start with the phones you already own. The full comparison sits in the guide SIM based calling vs cloud telephony.
SIM calling CRM on dual SIM phones
Plenty of salespeople run two cards in one handset, one for family and one for the job. They do not have to choose: Calling CRM can treat the job card as the standard line for client calls, and only the cards you tick are copied to the company backup.
Family and friends can go on the excluded list. Those numbers never reach the backup, and no automatic message or dialling ever touches them. More detail is on the dual SIM CRM page.
SIM-based call management for teams
Because each call is placed on a real SIM, the record of who called whom lives with the business, not only on the handset. The owner sees every employee’s SIM calls in the employee call tracking view, labelled by SIM.
When a phone is lost or replaced, signing in on the new phone restores the calls, leads and notes. The SIM card can move to the new handset as usual.
SIM calling CRM example: a car showroom in Nairobi
A used-car showroom in Nairobi has 4 sales staff, each with a dual SIM phone: one personal SIM, one company SIM. They set the company SIM as the default in Calling CRM and back up only that SIM.
Buyers who saved a salesperson’s number after a test drive see the same number when the follow-up call comes. Over a week the team logs about 350 calls, each labelled with the company SIM, while personal calls never leave the phones.
SIM calling CRM limits
A SIM-based setup is not the right fit when:
- Many agents must answer one shared published number. A SIM belongs to one phone at a time.
- You need an inbound menu ("press 1 for sales") or hold queues. That needs a telephony provider.
- Your callers sit at desks without mobiles and dial through headsets on a computer.
- Your mobile plan limits calls. A SIM calling CRM uses whatever plan the SIM already has.
SIM calling CRM FAQ
Can a SIM calling CRM ask which SIM to use for each call?
Yes. On a dual SIM phone, Calling CRM can ask for the card every time, or always use the one you marked for business.
What is the best SIM calling CRM for a field sales team?
The best SIM calling CRM for field sales logs calls from staff mobiles and also tracks visits. Calling CRM does both, with selfie attendance and a route map in the same app.
Is Calling CRM a SIM calling CRM?
Yes. Calling CRM places calls through the SIM in each phone and saves them to leads, with no rented numbers.
Does a SIM based calling CRM need internet for calls?
Not for the call, which travels over the cellular network like any phone call. A data connection is only needed to copy calls and leads to the business account.
Can a SIM calling CRM show which SIM was used?
Yes. Calling CRM labels every logged call with the correct SIM name, including on older Android versions.
Can I keep my personal SIM out of the SIM calling CRM?
Yes. Choose which SIMs back up, and add personal contacts to excluded numbers.
Does a SIM calling CRM work on Android?
Yes. Android supports the full SIM features, including SIM choice per call and the phone’s call log.
What happens in a SIM calling CRM when the network drops a call?
While a list is being worked, a call that fails before ringing gets two more attempts; only after that is the lead marked unreached.
Can a SIM calling CRM call international numbers?
Yes. Calling CRM handles country codes for display and dialling, so international leads dial correctly from the SIM.
Is SIM-based calling better than cloud calling?
It depends on the job. SIM-based calling suits mobile sales teams that want familiar numbers; cloud calling suits shared inbound lines and call queues.
Related pages
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