How to do bulk calls from a mobile phone, step by step

How to do bulk calls: the short answer

To do bulk calls, put every number into one clean list, load it into a dialer app, and let it call each number in turn while you note the outcome. AutoDial CRM runs that process as a bulk calling app on your own phone.

Search for this phrase and most results describe voice broadcasting, where a recorded message plays to thousands of people at once. That suits announcements, but it is not what a salesperson, an admissions counsellor or a tour operator needs when they want to talk to each lead. Live bulk calls are slower per number and far more useful per answer: every conversation leaves behind an outcome you can act on tomorrow. The hard part has never been dialing; it is everything around it. Lists arrive full of duplicates and missing country codes, half the numbers do not pick up, and by the afternoon nobody remembers who asked to be rung on Friday. A good process fixes those three problems before the first call, which is why the steps below spend as much time on the list and the follow-ups as on the calling itself.

How to do bulk calls: the steps

Timing matters as much as the tool. Business owners tend to answer mid-morning, consumers after work, and almost nobody at lunch, so plan sessions around when your audience picks up. Keep each session to about an hour with a short break, because tired voices convert worse than fresh ones.

How to do bulk calls continuously, without dialing each number

Calling feels continuous when the phone, not the person, decides what happens between conversations. Four settings do that:

• Gap between calls: a few seconds to finish your note before the next number rings. Managers may fix this value so the whole team works at one pace.
• Ring limit: how long an unanswered number rings before the dialer moves on.
• Redials: silent numbers get up to three more attempts, scheduled once the list is finished, after a chosen delay, or immediately.
• Network drops: a call killed by the network before ringing is retried, at most twice, and only then is the lead treated as unreached.

During the session you can skip a number, pause for a break or stop from any screen. Setting a minimum call length means a caller who hangs up instantly does not count as a finished lead.

Bulk calls with live voices or a recorded message

Choose the tool by the result you need. If the goal is to inform, for example a schedule change or a holiday closure, a recorded broadcast reaches everyone faster. If the goal is to sell, book or qualify, live bulk calls win, because each one produces an answer you can act on. The full comparison is on the hub page, and if the calls you make are mostly inside a CRM, the CRM with dialer page explains how the two fit together.

How AutoDial CRM helps do bulk calls

AutoDial CRM reads spreadsheet, CSV and JSON files, or fetches fresh rows from a Google Sheet or REST API in the background, removing repeated numbers and fixing country codes on the way in. Every upload stays a separate list. The dialer calls from your SIM, or through WhatsApp with a daily cap, shows the lead’s notes while it rings, and opens a two-tap sheet for status, remark and follow-up when you hang up. Follow-ups ring like alarms, and the day’s due ones can be dialed as one session. Lists can be shared out across a team, and a WhatsApp message can go out by itself once a conversation ends; see auto WhatsApp message after call. Leads export to CSV, filtered as you like. For the wider product, read about the auto dialer app.

How to do bulk calls: limits

Live bulk calling is bounded by talk time: one person can only hold so many conversations a day, so a list of 10,000 needs a team or a broadcast service. Calls from a SIM use your mobile minutes. Sessions routed through WhatsApp stop at a daily cap, set to 20 unless you change it, so the account is not flagged. Rules on sales calls, consent and do-not-call registers vary from Tanzania to Kenya, Britain, America and beyond (general information, not legal advice), so check yours before a campaign.

How to do bulk calls: an example

An illustration, not a named customer. A safari tour operator in Arusha, Tanzania, collects 300 numbers at a travel fair. Her two sales staff clean the sheet on Monday morning, import it, and split it 150 each. They set a 5-second gap, a 30-second ring limit and 2 redials at the end of the list. By Wednesday every number has been tried: about 180 answered, 45 asked for a quote, and 30 asked for a call back the following week, each with a reminder. The owner exports the list to CSV on Friday to see which fair contacts turned into bookings.