Dialer for OPPO Phones: ColorOS Settings for Calls and Reminders

Dialer for OPPO business phones

The Auto Dialer turns an OPPO handset into a lead-calling phone: it takes the default calling role in ColorOS, dials a list from the SIM in the phone without anyone typing digits, and records what each customer said before the next number rings. On OPPO the default app is the easy part. ColorOS decides separately whether an app may start by itself and whether it may keep working after the screen goes dark. OPPO's support answer on the subject, read on 4 October 2026, notes that from ColorOS 12 the auto launch switch left the old Phone Manager tool and moved into Settings › Apps › Auto launch, while background activity is granted per app under Battery. Many recent OPPO models ship Google's Phone app as the dialer, and OPPO also offers its own ODialer on the Play Store. Whichever one your phone has, it is replaced the same way.

Dialer for OPPO default app setting

1. Open Settings and tap Apps. On older ColorOS it is App Management, sometimes inside Additional Settings.
2. Tap Default App (newer builds may say Default apps).
3. Tap the phone or dialer entry and choose The Auto Dialer.
4. Confirm. Calls, contacts and history now open in the new app.

The exact wording varies by version. The Auto Dialer also asks for the role during its own setup, so the menu is mainly a fallback. What changes when the role moves is explained in default dialer settings on Android.

Dialer for OPPO auto launch and background activity

Auto launch lets ColorOS start an app without you opening it, and background activity lets it keep working once you leave it. A dialer needs both:

• Auto launch. Settings › Apps › Auto launch on ColorOS 12 and later; Phone Manager › Privacy Permissions › Startup Manager on earlier releases. Best for: alarms after a restart.
• Allow background activity. Settings › Battery › Power saving settings › App battery management, then the app. Best for: reminders set hours ahead.
• Lock in recent tasks. Open recent tasks and tap the lock on the app card. Best for: callers who clear everything between meetings.

Older reports on dontkillmyapp.com describe ColorOS stopping background services every time the screen turned off on some models, which is why all three matter rather than any one. Phones built on the same ColorOS roots behave much alike, so the realme UI dialer setup and the OxygenOS battery settings for OnePlus will look familiar.

Dialer for OPPO setup steps

Dialer for OPPO with a loan agent

The figures are round and illustrative, not taken from a customer.

A loan agent in Manila carries an OPPO Reno and handles roughly 100 applicants a month, chasing payslips and IDs. He calls each applicant, notes which document is missing, and sets a follow-up for the day it was promised. With auto launch off, his phone dropped the follow-ups whenever it restarted overnight. Once auto launch and background activity are allowed, each morning's reminders ring on schedule and today's due follow-ups can be dialed as one session. The wider process is described in loan telecalling from enquiry to documents.

Dialer for OPPO limits

An OPPO phone dials one number at a time on one SIM, and The Auto Dialer keeps it that way, so the call rate depends on how long people talk. If you are weighing that against a headset-and-browser setup, see telecalling software options. Callers who want OPPO's own call screen for personal calls can keep ODialer installed and switch the default back when work ends. Other brands with their own autostart switches have guides too, such as the dialer for Xiaomi and the dialer for vivo; the rest are covered from the Android dialer hub, and stubborn stops mid-list are in troubleshooting an auto dialer.