Question 1

Is SIM-based calling better than VoIP?

Accepted Answer

Neither is universally better — it depends on how your team works. For a desk-based contact centre with reliable bandwidth and a need for centralised routing, IVR and queueing, VoIP is the right architecture. For Indian teams calling from mobile phones — field sales, real estate, distribution, insurance, coaching — SIM-based calling usually wins on pickup rate, call quality outside metros, and total cost.

Question 2

Why do SIM-based calls get answered more often?

Accepted Answer

Because the customer sees a normal mobile number rather than an unfamiliar virtual or landline-style number. Unknown numbers are more likely to be screened or flagged as spam, especially after repeated outbound campaigns from the same VoIP range.

Question 3

Is VoIP call quality really worse in India?

Accepted Answer

VoIP quality is entirely dependent on internet bandwidth and stability. In metros on good broadband it is generally fine. Outside metros, on mobile data, or while travelling, unstable connections cause lag, jitter and dropped audio. SIM calls run on the carrier voice network, which reaches further than reliable broadband does.

Question 4

Which is cheaper — SIM-based calling or VoIP?

Accepted Answer

VoIP typically charges per minute on top of the software subscription, so cost scales with call volume. With SIM-based calling the call itself is covered by the rep's existing carrier plan, and you pay only for the CRM. For high-volume outbound teams that difference compounds quickly; for low call volumes it matters less.

Question 5

Can VoIP do things SIM-based calling can't?

Accepted Answer

Yes, and it's worth being clear about this. VoIP handles centralised inbound routing, IVR menus, call queues, extensions, simultaneous ring across agents and international calling far better. If your requirement is a structured inbound contact centre, VoIP or cloud telephony is the right fit.

Question 6

Do SIM-based calls get recorded and logged to the CRM?

Accepted Answer

Yes. With NeeN AI, calls placed from the rep's SIM through the Android app are recorded and attached to the matching lead automatically, along with duration, direction and the outcome the rep selects — including inbound calls from known leads.

Question 7

Does SIM-based calling work without internet?

Accepted Answer

The call itself works on the mobile network with no data connection. CRM updates queue locally and sync automatically once the app is back online, so patchy coverage doesn't lose activity data.

Question 8

Can I use both SIM-based calling and VoIP?

Accepted Answer

Yes, and many teams should. A common setup is SIM-based calling for outbound field and sales reps, with cloud telephony handling the inbound support line. 9ance supports both — the SIM-based CRM for mobile teams and 9ance Telephony for the cloud dialer and integration side.

Feature	NeeN AI SIM-Based CRMRecommended	VoIP
Number customers see	Real mobile number	Virtual / VoIP number
Call quality depends on	Carrier voice network	Internet bandwidth
Works while travelling / weak data
Per-minute call charges	None (carrier plan)	Usually yes
Setup time	Install app, sign in	Number provisioning & config
Rep learning curve	Calls as they always do	New dialer interface
Automatic CRM call logging		Depends on integration
Call recording
Auto dialer / call queue
Inbound IVR & call queues	Via 9ance Telephony
Extensions & simultaneous ring
International outbound calling	Carrier rates apply
Best suited to	Mobile-first sales & field teams	Desk-based contact centres

SIM-Based Calling vs VoIP — Which Actually Works for Indian Sales Teams?

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