Lock Down Your Phone and Bank Apps Before Holiday Travel
By the AllThingsMobile team Published 9 min read
Quick answer
Before you travel, lock your phone with a strong PIN, turn on tracking, tighten your bank and WhatsApp security, and make sure you can block your SIM fast. These simple steps can reduce the risk of theft, SIM-swap fraud and account takeovers in South Africa.
Before you travel, do four things first: set a strong screen lock, switch on Find My iPhone or Find My Device, secure WhatsApp with a PIN, and make sure your bank app needs biometric or app-PIN approval. If your phone is stolen, those steps can protect your money, your number and your accounts.
You do not need advanced security tools. You need a few settings turned on before you leave, plus a simple backup plan for the first hour after a theft.
Set up the phone so a thief sees as little as possible
Your phone is the front door to your email, bank app, photos and WhatsApp. If that lock is weak, everything behind it is easier to reach.
Use a 6-digit PIN or longer
If you still use a 4-digit PIN, change it. A 6-digit PIN is better, and a longer numeric code is better again.
Avoid birthdays, anniversaries, repeating digits and anything a family member could guess. Keep fingerprint or face unlock on for convenience, but do not rely on biometrics alone.
Turn on tracking before anything goes wrong
On iPhone, go to Settings > your name > Find My > Find My iPhone. On Android, open Settings and search for Find My Device, then make sure location is also on.
This lets you ring, lock or erase the phone from another device. If you want the full emergency order, save Phone stolen in South Africa: what to do in the first hour before your trip.
Hide message previews on the lock screen
A thief should not be able to read your OTPs, bank alerts or WhatsApp codes without unlocking the phone. That one setting blocks a lot of easy account takeovers.
- On iPhone: Settings > Notifications > Show Previews > choose When Unlocked or Never.
- On Samsung and other Android phones: Settings > Notifications > Lock screen notifications, then hide content.
- Also hide previews for banking, email and wallet apps where possible.
Reduce SIM-swap risk on Vodacom, MTN, Telkom, Cell C or Rain
SIM-swap fraud happens when someone gets your number moved to another SIM. Once they control your number, they may receive SMS OTPs, password reset codes and WhatsApp registration codes.
The safest approach is simple: do not let your mobile number be the only key to your accounts.
Ask your network what checks they can add
Call or visit your network and ask what protection they offer before a SIM replacement or number port is approved. South African users will usually be dealing with Vodacom, MTN, Telkom, Cell C or Rain.
If the SIM or contract is in a spouse's or child's name, check that the account details are current. Wrong details can make fraud checks weaker and can also slow down a real recovery.
Use app approval instead of SMS where your bank allows it
SMS OTPs are still common, but they are weaker than approval inside the banking app. If your bank lets you approve logins or payments in the app, use that option.
Also secure the email account linked to your bank. If a criminal gets both your email and your number, account recovery becomes much easier for them.
Know the warning signs
Act fast if any of these happen without a clear reason:
- Your phone suddenly loses signal while people around you on the same network still have service.
- You stop receiving calls or SMSes.
- You get password reset alerts you did not request.
- WhatsApp says your number is being registered on another phone.
If that happens, use another phone and call your network and bank straight away. Do not wait until you get home.
Check your bank app before you leave home
Your bank app should lock every time you open it. If it stays open too long, shorten that timeout before your trip.
Use this quick banking safety checklist
- Turn on biometric login if your bank supports it.
- Set an app PIN that is different from your phone PIN.
- Enable transaction alerts.
- Review your payment limits and lower them if you do not need high limits while travelling.
- Check the trusted devices list if your bank offers one.
Do not store card photos, ID photos or banking passwords in your gallery or notes app. If you need a backup, write down only the emergency contact numbers and keep them separate from the phone.
A simple setup works better than a complicated one
Most older users are better off with one main phone that is set up properly, plus one trusted family member who knows how to help if the phone goes missing. You do not need extra security apps if the basics are already in place.
If you are shopping for a simpler replacement, the Xiaomi Redmi Note 15 starts from R4,999 and the Samsung Galaxy A37 5G starts from R5,599, based on our latest checks. For more easy-to-use options, see 7 Best Simple Phones for Older South Africans in 2026.
Turn on the WhatsApp settings that stop the most common scams
WhatsApp is often the first account criminals target. If they get in, they can impersonate you and ask family for money within minutes.
Switch on WhatsApp two-step verification
Open WhatsApp and go to Settings > Account > Two-step verification. Set a PIN and add an email address you actually use.
This will not stop every attack, but it makes it much harder for someone to re-register your WhatsApp account after a SIM swap.
Reduce scam calls and oversharing
- Settings > Privacy > Calls > Silence Unknown Callers.
- Settings > Privacy > Last Seen and Online: limit who can see it.
- Settings > Privacy > Profile Photo and About: set to My Contacts.
- Settings > Privacy > Groups: stop strangers from adding you to groups.
These settings cut down on spam and make social engineering harder. Scammers often use small personal details to sound convincing.
Never share a code from SMS or WhatsApp
If someone says they are from your bank, Vodacom, MTN, Telkom, Cell C, Rain, SARS or the police and asks for a code, end the call. Real support staff should not need your OTP or WhatsApp registration code.
If a family member messages asking for urgent money, phone them on their normal number first. Do not trust the message alone.
Write down a paper backup plan
If your phone is gone, you may not be able to look up numbers, emails or account details online. A small paper backup still works when the phone does not.
Keep the note in your wallet, handbag or luggage, not inside the phone cover.
| Write this down | Why it matters |
|---|---|
| Your bank fraud number | You can ask them to secure digital banking fast |
| Your network support number | You can block the SIM or report a possible SIM swap |
| A trusted family contact | They can help with recovery steps |
| Your phone number and device model | Support staff will ask for both |
| Your Apple ID or Google account email | You may need it for Find My iPhone or Find My Device |
Do not write down full banking passwords, card PINs or full card numbers. The note should help you recover, not create another risk.
If your phone is stolen, do these steps in this order
When a phone is stolen, speed matters more than anything else. Start with the steps that protect your number and your money.
- Use another phone to call your number once. If someone answers, do not negotiate and do not try to track them down yourself.
- Open Find My iPhone or Find My Device and mark the phone as lost, lock it, or erase it if needed.
- Call your network and block the SIM. Ask if there has been any recent SIM-swap or replacement request.
- Call your bank and ask them to secure digital banking access.
- Change the password on your main email account.
- Check WhatsApp, email and bank alerts for unusual activity.
Worked example: a simple South African travel check
Example: You are travelling from Johannesburg to Durban with a Samsung Galaxy A37 5G. Before you leave, you switch on Find My Device, change the screen lock to a 6-digit PIN, hide lock-screen previews, turn on WhatsApp two-step verification, and make sure your bank app asks for biometric approval every time it opens.
At a petrol station, the phone is stolen. The thief cannot read your OTPs from the lock screen, cannot easily re-register your WhatsApp account, and cannot open your banking app without your biometric or app PIN. You then use another phone to block the SIM and secure your banking access.
Who should replace an old phone before a trip
If your current phone no longer gets updates, crashes often, or has a broken fingerprint reader, it may not be a good travel phone. Reliability matters more than fancy features when your banking and identity are on the device.
You do not need a flagship just to be safer. A budget or mid-range phone can be enough if it supports a strong PIN, biometrics and remote tracking. If you want to compare options, our phone comparisons can help.
Frequently asked questions
How do I prevent a SIM swap in South Africa?
Ask your network to add the strongest identity checks they offer for SIM changes or number ports. Also use app-based banking approval instead of SMS where possible, and secure the email account linked to your bank.
What should I do first if my phone is stolen?
Use Find My iPhone or Find My Device to lock the phone, then call your network to block the SIM and call your bank to secure digital banking. After that, change your main email password.
What is the best WhatsApp protection for older users?
Turn on two-step verification, silence unknown callers, and limit who can see your profile details. The most important habit is never sharing a verification code with anyone.
Should I still use SMS OTPs for banking?
Only if your bank does not offer a stronger option. Approval inside the bank app is usually safer because a SIM swap can redirect SMS messages.
Do I need a new phone to be safer on holiday?
Not always. If your current phone still gets updates and supports a strong PIN, biometrics and remote tracking, it may be fine. If it is old or unreliable, a newer budget or mid-range model may be the safer choice.
