Whether you’ve just gotten a new Cell C SIM, switched phones, or simply can’t remember your own number off the top of your head, this guide covers every way to check your Cell C number, how to find it in international format, and what to do if your number turns out to be inactive.
Why You Might Need To Look This Up
It sounds like a small thing, but not knowing your own number comes up more often than you’d expect — setting up WhatsApp or banking apps on a new phone, filling in a job application or online form, giving your number to a delivery driver, or registering for RICA compliance after a SIM swap. Cell C gives you several ways to retrieve it, and it’s worth knowing more than one method since not all of them work in every situation (for example, USSD needs network signal, while checking your phone settings works even offline).
5 Ways To Check Your Cell C Number
1. USSD Code (Fastest Method)
Dial *147# and press the call button. This opens Cell C’s main self-service menu. From the options shown, select option 8 (“Customer Info”) and your number will display on screen.
If you’d rather skip the menu entirely, there’s also a direct shortcut: dial *147*100#. This takes you straight to your MSISDN (your number) without navigating through the menu first. Both routes work — *147# then option 8 is the “long way,” and *147*100# is the express version of the exact same request. Use whichever is easier for you to remember; there’s no difference in the result.
2. Check Your Phone’s Settings
- Android: Go to Settings > About Phone > SIM Status, and your number should be listed there.
- iPhone: Go to Settings > Phone > My Number.
Note that on some Android skins and older iOS versions, this field can be blank even when the SIM is active — carriers don’t always populate this field automatically on every device. If that happens, use the USSD method instead, which pulls directly from Cell C’s network rather than relying on what’s stored locally on the SIM or handset.
3. Cell C App
Download the Cell C app from the Google Play Store or Apple App Store, log in (or register if you’re a new user), and go to the “My Account” section — your number will be displayed there alongside your balance and account details. This method is useful if you’re already logged in and want to avoid dialling a USSD code, but it does require a data connection to work, unlike USSD.
4. Call or Message Someone
If you have access to another phone, call or send a “Please Call Me” to it — your number will appear on their caller ID or message notification. To send a free Please Call Me from your Cell C number, dial *111*[recipient’s number]#. This method is handy if you’re completely out of airtime and data, since Please Call Me requests don’t require any balance.
5. Contact Cell C Customer Care
Call 135 from a Cell C number (free) or 084 135 from any other network (standard rates apply), and ask a consultant to confirm your number after verifying your identity. This is the slowest method of the five, so it’s best used as a backup if the others aren’t working for you.
Finding Your Number In International Format
If you need your Cell C number for an international service, app registration, or to give to someone overseas, you’ll need the international format rather than the local one. To convert it: drop the leading 0 from your local number and add South Africa’s country code, +27, in its place. For example, a local number like 084 123 4567 becomes +27 84 123 4567 in international format. Most apps that ask for your number (WhatsApp, banking apps, international couriers) will handle this conversion automatically if you select South Africa as your country first, but it’s useful to know how to do it manually too.
What If Your Cell C Number Isn’t Working?
If none of the above show a valid, active number, your line may have been suspended or deactivated. The most common reasons:
- Non-usage for a prolonged period — prepaid numbers that go unused for too long without recharging can be reclaimed by Cell C
- Low or expired airtime balance — some validity periods lapse without a top-up
- RICA non-compliance — South African law (the RICA Act) requires every SIM to be registered with your ID and proof of residence; unregistered or improperly registered SIMs can be deactivated
To fix a deactivated number:
- Try recharging with airtime first — via voucher, EFT, or the Cell C app — as this alone reactivates many suspended lines
- If that doesn’t work, call Cell C customer care on 135 (Cell C number) or 084 135 (other networks) for reactivation assistance
- If the deactivation is RICA-related, you’ll need to visit a Cell C store in person with your original ID document and proof of residence to update your registration and get the number reactivated
Which Method Should You Use?
With five options available, here’s a quick comparison to help you pick the right one for your situation:
| Method | Needs Airtime/Data? | Speed | Best For |
| USSD (*147# or *147*100#) | No | Instant | Most situations — the default choice |
| Phone Settings | No (offline) | Instant | Checking without dialling anything |
| Cell C App | Data required | Fast | If you’re already logged in |
| Call/Please Call Me | No | Instant | Zero balance, need a second phone |
| Customer Care (135) | No (free call) | Slowest | Backup if other methods fail |
For most people, the USSD method is the best default — it’s free, doesn’t need data, and works on literally any phone including the most basic feature phones, which is exactly why USSD remains so widely used across South African telecom services in general, not just for this particular task.
A Note On RICA Compliance
Since RICA non-compliance is one of the more serious reasons a number can stop working, it’s worth understanding what it actually requires. The Regulation of Interception of Communications Act requires every South African SIM card — prepaid or postpaid — to be registered against the owner’s identity document and proof of residential address before it can be activated. This applies whether you bought your SIM from a Cell C store, a retailer like Shoprite or Pick n Pay, or received one as part of a contract deal.
If you registered your SIM correctly when you first got it, you generally won’t run into RICA issues later — the problems mostly arise from SIMs bought informally (secondhand, from an unofficial reseller) where registration wasn’t done properly, or where your proof of residence has since become outdated in Cell C’s records. If in doubt, a quick visit to any Cell C store with your ID document will confirm whether your registration is current.
Frequently Asked Questions
Does dialling *147# cost anything?
No, USSD session codes like *147# are free to dial, regardless of your airtime balance.
What’s the difference between *147# and *147*100#?
Nothing functionally — *147# opens the full menu where you then choose “Customer Info,” while *147*100# jumps directly to the same result in one step. Use whichever is faster for you to remember.
Can I check my Cell C number without airtime?
Yes — USSD codes don’t require airtime or data to work, which makes this the most reliable method if your balance is at zero.
I just got a new SIM and *147# isn’t giving me a number yet — why?
New SIMs can take a short while to fully activate on the network after RICA registration. If it’s been more than a few hours since activation, contact customer care on 135.
Will my number change if I do a SIM swap?
No — a SIM swap moves your existing number onto a new SIM card; your number itself stays the same.
Why does my number show differently in different apps?
Some apps display your number in local format (084…) and others in international format (+27 84…) — both refer to the exact same number, just formatted differently depending on the app’s settings or your selected country.
Can someone else look up my Cell C number using my ID?
No — Cell C will only confirm account details, including your number, to the verified account holder, either in person with ID or over the phone after identity verification. This is a privacy protection, not an inconvenience.
