Do you have any restrictions in the future with the old phones?
No.
Which updates? If so, you're missing security updates.
It can happen that you need new updates. If the app developers change something in their apps for which an update is necessary, it may be possible that it will eventually stop working
Dear HUAWEI family, dear customers!
Over the past few days, the news has spread and you have reacted with great understanding, why we thank you warmly. We also want to share this important information with you:
HUAWEI will continue to provide security updates and services for all existing smartphones and tablets. This affects sold and stored equipment worldwide, thus also in Austria. 😊 In addition, all existing products as well as the ones we currently sell may fully use the Google services as before. Likewise, the apps can be updated as usual. We will also continue to work on developing a secure and sustainable Android ecosystem to deliver the best possible user experience worldwide.
We would like to thank you once again for your loyalty and your understanding towards us!
Your HUAWEI team