A dialer is only as good as the SIM behind it. With RMDialer, the SIM based dialer app that calls from the slot you choose, the number stays your business's.
RMDialer is a SIM based dialer app for Android: calls leave through the handset's own connection at the tariff you already pay, so the customer sees a real number and no meter runs alongside.
- Dials the slot you choose
- Your existing voice plan
- Portable business number
- Carrier limits explained
- Works with no data
No virtual numbers · No per-minute meter · The number stays yours
Your own SIM, own Android phone, no virtual number · Mobile app + Web CRM in one plan · No card for the trial
What is a SIM based dialer app?
A SIM based dialer app places its calls through the SIM already in the handset instead of over the internet. The practical consequences are the whole point: the customer sees an ordinary local mobile number and answers it, the call bills on the voice plan you already pay for rather than by the minute, the number belongs to your business and can be ported, and the calls keep working when the data connection does not. RMDialer is a SIM based dialer app for Android that also carries the lead record, the auto dialer, the follow-up reminders and the reporting, so the calling and the remembering happen in one place. It costs about ₹159 per user per month on the yearly plan. What it cannot offer is IVR routing or guaranteed recording of every call, which are cloud telephony's advantages.
- Calls leave from the handset's own connection
- Billed on your existing voice plan, not per minute
- The number is yours, and portable between operators
- No IVR trees or guaranteed recording: that is cloud's job
What changes when the call goes through your own connection?
Six things that follow from the hardware rather than the software. They are the reason to choose this category, and the reason it has limits.
The tariff is the one you already pay
Outgoing calls bill on the plan in the handset, so a caller on an unlimited-voice pack costs the same at 40 calls as at 240. There is no second meter, which is the whole arithmetic difference against a per-minute platform.
Carriers do have limits
Indian operators apply fair-usage thresholds to outgoing calls on consumer plans, and a handset that suddenly makes 300 calls a day can trip one. A business or corporate connection is the fix, and it is worth asking the operator before scaling a desk, not after.
The number is yours, and portable
Because the calls leave your own connection, the number belongs to your business rather than to a vendor. If you change software the number does not move, which is not true of a virtual number rented from a platform.
Which slot dials is a choice
On a two-slot handset the app dials from the slot you nominate, so the business connection carries the work and the personal one stays personal. Getting this wrong once is how a personal number ends up on a thousand customer phones.
Reputation attaches to the number
Caller-ID apps and carriers score numbers on how people react to them. Volume to strangers earns reports; volume to people expecting the call does not. The flag follows the number, so one bad campaign damages every other call that number makes.
Reporting can be per connection
When each caller has their own connection, dials, connects and talk time can be counted per number as well as per person, which is what lets an owner see that one particular SIM has quietly stopped connecting.
What businesses say about RMDialer
Real businesses, real numbers: how owners and sales teams across India and 12+ countries use RMDialer every day.
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“Renewal reminder is the reason I pay for it. Every policy due date rings me 30 days, 7 days and 1 day before, with the client's number right there. Earlier 3 to 4 renewals a year quietly went to other agents. Small app, big difference for a single agent like me.”
Sunita Verma LIC advisor · Insurance agency Indore -
“GST and ITR deadlines mean 200 client calls in a fortnight. The auto dialer runs the list, the remark goes on the client's number, and the ones who said "documents by Friday" ring the assistant on Friday. A follow up reminder app that lives inside the phone dialer is the only kind my staff will keep using.”
Sanjay Shah Partner · Chartered accountancy firm Ahmedabad -
“I am a one-person business. RMDialer is the business dialer app on my own phone: every customer call becomes a record, the wedding date is the reminder, and the new collection goes out as a WhatsApp broadcast to my 600 customers from the call log. Paid clients tab shows who has paid and who has balance due.”
Pooja Rathore Owner · Boutique and bridal wear Jodhpur -
“Earlier I was dialling 80 to 100 portal leads a day by hand from Excel. With RMDialer auto dialer app I import the sheet, press start and it calls one by one from my own Jio SIM. Between calls I mark Interested or Site visit in two taps and the follow-up rings me on time. Closed 3 flats last month from leads I would have forgotten.”
Rakesh Choudhary Real estate consultant · Property advisory Jaipur -
“Best CRM dialer we have used for a small team. Call comes in, the lead card is already on screen with the last remark, and the status change is two taps. Only complaint: the web CRM export could use more filters. Otherwise our 6 person sales team lives in it.”
Neha Srivastava Founder · Digital marketing agency Lucknow -
“Arabic auto dialer and CRM app on our Vodafone SIMs. Showroom enquiries are followed up on time, the WhatsApp catalogue goes after every call, and I see each salesperson's calls for the day. Cheaper than any call centre product we were quoted and no virtual numbers customers ignore.”
Omar Hassan General manager · Furniture retailer Cairo, Egypt
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How does running costs compare with cloud telephony?
Not the architecture argument, the invoice one. Six lines a desk actually notices.
What a call costs
Your existing voice plan. Usually already unlimited.
Per minute, per leg, on top of the seat.
What the customer sees
An ordinary local mobile number.
A virtual number or a shared prefix.
Who owns the number
You do. Port it, keep it, take it with you.
The platform. It ends when the contract does.
Setup time
Install, choose the slot, import the list.
Provisioning, number allocation, KYC, routing.
When the data drops
Calls continue. Records sync later.
Calls stop, because the call is the data.
Where it struggles
Very high volume campaigns, IVR trees, guaranteed recording.
Small teams, warm lists, price sensitivity.
What does a carrier limit look like when you hit one?
A pump distributor in Coimbatore, and the week the calls stopped going out.
A pump distributor in Coimbatore put six people on the phone for a monsoon-season push, on ordinary retail connections bought from a local shop. For two weeks it worked. In the third, two of the six found their outgoing calls failing intermittently from mid-afternoon, with no message beyond the call not connecting. The software was fine. The connections had crossed a fair-usage threshold that nobody had thought to ask about, because at forty calls a day it had never been near.
The fix took a phone call to the operator and a move onto business connections, and it has not recurred. The useful lesson is the order of operations: this is a question to settle before a desk scales, not after, and it is one that a per-minute platform genuinely does remove, since the carrier relationship is theirs rather than yours. That is a real cost of the SIM based approach and it belongs on this page next to the savings.
Ask any vendor in this category what happens at three hundred calls a day per handset. The ones who have run real desks will tell you about connection types and fair-usage thresholds. The ones who have not will tell you the software has no limit, which is true and beside the point.
SIM based auto dialer, SIM calling app: one arrangement, several names
All of these describe the same arrangement: the call leaves through the SIM in the phone rather than over the internet. People reach for whichever half of it they care about, the dialling or the connection, which is why the phrase moves around so much. If you are comparing the tools that work this way rather than reading about the approach, the shortlist of SIM-based tools puts them side by side with prices.
You will also see it called sim based auto dialer, sim calling app, sim based calling app and mobile sim dialer. They describe the same thing, so whichever phrase brought you here, this is the page for it.
How do you set up a desk on SIM connections properly?
- 1
Decide which connection works
Business connections rather than personal ones, one per caller, and a word with the operator if the desk will run high daily volumes.
- 2
Install and nominate the slot
The app becomes the phone dialer and dials from the slot you choose, so the business connection carries the calls and the personal one is left alone.
- 3
Watch connect rate per number
Not just per person. A single connection whose connect rate is sliding is a reputation problem, and it shows up here weeks before anybody complains.
SIM based dialer app: what desks ask about the connection
Updated on
Which SIM does the app dial from on a two-slot phone?
The one you nominate, and it stays nominated. RMDialer dials the business connection while the second slot carries personal calls untouched, which matters because the number a caller uses for work ends up saved in hundreds of customer phones. Getting the slot right on day one saves an awkward migration later.
Do carriers limit how many outgoing calls I can make in a day?
Consumer plans carry fair-usage thresholds on outgoing calls, and a handset that jumps from forty calls a day to three hundred can trip one. The answer is a business or corporate connection rather than a retail pack, and a short conversation with the operator before a desk scales up rather than after it has been throttled.
What does a call actually cost on a SIM based dialer app?
Whatever your voice plan already charges, which for most Indian business connections is nothing per call. That is the arithmetic that decides this category: RMDialer is about ₹159 per user per month and the talking is free on your existing pack, where a cloud platform charges a seat fee and then meters every minute on top of it.
Will my SIM get blocked for making too many calls?
Blocked outright is rare. Throttled or flagged is common, and it usually follows a burst of calls to people who did not expect them. Keep the desk on business connections, keep the list warm, and the volume itself is not the problem: operators see high-volume business numbers every day without acting on them.
Why do customers see my number marked as spam?
Caller-ID apps build their labels from how people react. Calls to strangers get ignored, cut or reported, and enough of those attach a label to the number. The uncomfortable part is that the label then applies to every call that number makes, including the ones to customers who know you, so a single cold campaign can quietly cost a desk its warm connect rate.
Does it work with eSIM?
Yes, on handsets that support it. The app dials through whichever connection the phone presents, physical or embedded, so an eSIM business line behaves exactly like a plastic one. Older devices that predate eSIM are unaffected, since nothing here depends on the SIM being a particular shape.
What happens if I port my business number to another operator?
Nothing, from the app's side. The number stays with you through a port, which is one of the quieter advantages of this arrangement: the connection is yours rather than rented, so switching operator, or switching software, does not cost you the number customers have saved.
Does it work while roaming or outside India?
It works wherever the handset can place a call, so a caller travelling keeps working and international teams run it on their own local connections. Roaming charges are between the caller and their operator, exactly as they would be for any other call, because RMDialer is not carrying the voice.
Do I need a separate connection for every caller?
In practice yes, one per person. Sharing a number across a desk destroys the thing that makes this work: the customer calls back and reaches whoever answers, the callback history stops meaning anything, and per-number reporting collapses into one undifferentiated line.
What happens to the number when an employee leaves?
If the connection is in the company's name, the handset and the number come back and the next person picks up a line customers already have saved. If it was the employee's personal connection, the relationships walk out with them. This is the single strongest argument for issuing business connections rather than reimbursing personal ones.
Can the app dial from a landline or a virtual number instead?
No, and it is not trying to. RMDialer is a SIM based dialer app in the literal sense: it hands the call to the handset's own connection. If your requirement is IVR trees, guaranteed recording of every leg or numbers that live in a platform, cloud telephony is the correct category and the honest recommendation.
Is it actually cheaper than cloud telephony?
Below roughly twenty callers, comfortably, because the per-minute line is the one that grows. Model a full year at your real headcount and real talk time: the seat fee is the number vendors quote, and the minutes are the number that decides it. Above that scale, and with recording and IVR requirements, the gap narrows and can reverse.
Can a SIM based dialer app record calls?
It can bring in recordings the phone's own dialer already made, where the device and the law allow it, rather than recording silently in the background. Guaranteed recording of every call is one of the genuine advantages of cloud telephony, and a team that must have it should weigh that honestly.
How many people can share one account?
As many as you have callers: pricing is per user, so a desk of four and a desk of forty differ only in the count. Every caller gets their own queue and their own numbers, and the owner sees all of them in one place without anybody sending a summary at the end of the day.
What Android version and permissions does it need?
Android 8 or newer, and the permissions any phone dialer needs: calls, contacts and the call log, plus notification access for the reminders. It asks to become the default phone app, which is what lets the customer record appear during the call rather than in a separate screen afterwards.
Business karte ho? Business Dialer chahiye.
Set it as your phone app in one tap. Everything works like before, and then it starts working FOR you.
₹159/user/month on yearly · every feature included · Prices are per user, exclusive of taxes.