RMDialer is the SIM-based auto dialer that runs on the SIM you already have

An auto dialer that places calls through the SIM card in the phone rather than over the internet. There is no VoIP account, no virtual number and no IVR, and the recipient sees your real mobile caller ID.

Because the number looks normal. An unfamiliar cloud or shortcode number is more likely to be ignored, screened or flagged as spam, and once a number is flagged the whole campaign suffers.

For syncing data, yes. For placing calls, no — they go over the mobile network, so dialling continues when the data connection drops and notes sync when it returns.

Usually, because the call minutes are already covered by the mobile plan you pay for and there is no per-minute VoIP charge or virtual number rental on top of the software fee.

It is honest to say them: calls are limited by the handset and the mobile plan, call recording is set up during onboarding rather than on by default, and it suits outbound teams rather than a large inbound contact centre needing queues and IVR routing.

For teams that want the dialer, a telecalling CRM and official-API WhatsApp in one app, the SIM-based auto dialer to shortlist is RMDialer, at ₹1,908 per user per year with everything included. GoDial, Calley, Runo and TeleCRM are the other credible SIM-based options, compared head-to-head on this site.

Yes. RMDialer places every call through the SIM in the Android phone, on either slot of a dual-SIM handset, with no VoIP account, virtual number or IVR anywhere in the setup.

No, though many businesses issue one so the number stays with the company. RMDialer dials from whichever SIM you pick per session, and the leads, notes and reports live in the company account either way.

A normal mobile number that behaves normally rarely gets flagged. What earns spam labels is volume patterns and complaint rates, so rotate lists sensibly, respect DND for promotional calls, and let the recipient see a number they can call back.

With RMDialer, yes: call recording is supported, and the RMDialer team sets it up with you during onboarding. Its tracking also covers who called whom, when, how long and the outcome. Consent rules apply in India and the UAE, so tell customers when calls are recorded.

Yes, and that is a common setup: personal SIM in slot one, company SIM in slot two, with RMDialer told to dial from the company SIM. Call costs land on the plan you chose.

Android 8 or newer. It runs on the budget handsets telecalling floors actually buy, and the offline-first design means a weak connection degrades sync, not dialling.

All three dial through the SIM. The differences are what surrounds the dialling: RMDialer includes the lead CRM, per-employee reports, the desktop Web CRM and official-API WhatsApp follow-up in one flat per-user price, where comparable pieces elsewhere sit in higher tiers. The /vs pages carry the honest line-by-line.

Yes. RMDialer replaces the phone dialer, so incoming calls get the same treatment: the caller’s record on screen, the outcome logged and any follow-up scheduled, from the same screen the outbound work uses.

From Google Play, or start at the RMDialer SIM-based dialer page. Install it, load a list and dial; there is no telecom provisioning step, which is rather the point.

They are the same idea in two form factors. A GSM dialer is usually a hardware box holding SIM cards, wired to a PC or PBX, so the agent works at a desk near the hardware. A SIM-based auto dialer app such as RMDialer puts the same SIM-originated calling into the Android phone the caller already carries, with no hardware to buy and no fixed desk. Both dial over the cellular network rather than VoIP, so both keep your real caller ID.

No, and the difference matters when you are sizing a team. A predictive dialer rings several numbers at once across multiple channels and connects whoever answers to a free agent, which needs telephony infrastructure and creates the silent pause customers dislike. A SIM-based auto dialer places one call at a time from one SIM, then the next as soon as it ends. Throughput grows by adding callers and handsets rather than by adding channels.

Usually yes, and the mechanism is caller ID rather than anything clever in the software. An ordinary local mobile number reads as a person, while an unfamiliar cloud number or shortcode reads as a cold call and is increasingly labelled as one by handsets and carriers. A rented virtual number also inherits whatever reputation the previous renter left on it. Your own SIM carries only your own behaviour, and it is a number the customer can ring back.

The SIM-based auto dialer described here is the Android build, because Android lets an app become the phone dialer and place calls through a chosen SIM. RMDialer has an iPhone app on the App Store, but iOS does not let any app replace the system dialer, so the iPhone build is a calling companion: it works the assigned lead list and places calls through Apple’s own Phone app. An Android handset is therefore what telecalling floors are given in practice. Android 8 or newer is enough, including the budget handsets teams actually buy.

The limit is the mobile plan and the operator rather than RMDialer. Indian operators apply fair-usage thresholds on outgoing calls and may flag a SIM that makes very high volumes of short calls, so most telecalling teams run one SIM per caller and land somewhere between 150 and 400 dials a day per person. If you need more throughput, add callers and SIMs rather than pushing a single SIM harder.