Can I keep my Indian number while using an eSIM?
Yes. Your Indian SIM stays in your phone. Use the Olysim eSIM for data, and keep your Indian SIM on if you want calls and SMS on your own number, through your Indian provider's roaming.
Most eSIM phones are dual SIM, so your Indian SIM and the Olysim eSIM can be on at the same time.
Step by step
- 1Step 1 of 4
Leave your Indian SIM in the phone.
Nothing needs to be taken out.
- 2Step 2 of 4
Install the Olysim eSIM at home on Wi-Fi.
It sits next to your Indian SIM.
- 3Step 3 of 4
When you land, choose Olysim for mobile data.
Your data then comes from Olysim, not from Indian roaming.
- 4Step 4 of 4
Turn data roaming off on your Indian SIM.
This stops costly roaming data on your Indian number.
What still works on your Indian number
- WhatsApp stays on your Indian number and works over the Olysim data.
- Calls and SMS to your Indian number reach you only through your Indian provider's roaming. Check its roaming plan and prices before you fly.
Olysim gives you data only. It does not carry calls or SMS for your Indian number.
Do not reinstall WhatsApp abroad. It would ask for a code by SMS on your Indian number, which may not reach you.
Common questions
Will people still reach me on WhatsApp?
Yes. WhatsApp keeps your Indian number and works on the Olysim data.
Do I need an international roaming pack on my Indian SIM?
Not for data, Olysim covers that. If you want normal calls or SMS on your Indian number, check what your Indian provider charges for roaming.

