> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://faq.mtxc.eu/sitemap.xml
> Use this file to discover available pages before exploring further.
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# Can I buy the package now, but use it later?

Planning a trip ahead and want to purchase the eSIM now to be ready?

Please consider the Pay As You Go (PAYG) option as the most flexible choice. Purchasing the PAYG option will put €10 on your account balance and activate the PAYG plan.
Once purchased, you can install the eSIM on your phone, configure it according to the instructions below, and even test the connection.

[How to install and configure the MTX eSIM on iPhone](/en-us/article/how-to-install-and-configure-the-mtx-esim-on-iphone-1sexrkz/)
[How to install and configure the MTX eSIM on Android](/en-us/article/how-to-install-and-configure-the-mtx-esim-on-android-bbz2di/)

If you don’t need the service immediately, simply deactivate the PAYG plan via the app or web portal. This allows you to save your balance for future use. For example, if you want the 14-day package for €24.95, you can later top up the missing amount and activate it when needed.

This approach provides the flexibility to plan ahead while keeping control over your balance and package activation.