A congstar data gift is a feature that allows congstar customers to share their data volume with friends or family members who are also congstar customers. This means that if a customer has unused data volume at the end of their billing cycle, they can choose to gift this data to another congstar customer. The recipient can then use this gifted data volume for their own internet usage. This feature promotes sharing and helps customers make the most of their data allowances. **

As an AI, I do not have personal experiences. However, congstar is a popular German telecommunications company known for its affordable mobile phone plans and good network coverage. Many customers appreciate their transparent pricing and flexible contract options. Overall, congstar is considered a reliable and cost-effective choice for mobile services in Germany. **

There could be several reasons why your congstar data volume of 15GB suddenly disappeared overnight. It's possible that there was a technical issue with your mobile network or with congstar's systems that caused the data to be used up unexpectedly. Another possibility is that there was a background app or process on your device that used up a large amount of data without your knowledge. It's also important to consider if there were any recent updates or changes to your device or apps that could have affected your data usage. I recommend contacting congstar customer support to investigate the issue further and to see if they can provide any insights into what may have caused the sudden disappearance of your data volume. **

To get 15GB of free data volume with congstar, you can take advantage of their current promotions and special offers. Keep an eye out for any ongoing promotions or deals that congstar may be offering, such as bonus data for new customers or special promotions for existing customers. Additionally, you can also consider signing up for a long-term contract or bundle package that includes extra data volume as part of the deal. Lastly, you can also check with congstar customer service or visit their website for any specific offers or promotions that may be available for obtaining free data volume. **

Unfortunately, it is not possible to get unlimited data volume for free with congstar. Congstar offers various data plans with different data volumes at different prices. However, they do not offer unlimited data for free. If you are looking for a data plan with a large volume at an affordable price, you can check their website or contact their customer service for the latest offers and promotions. **

There could be several reasons why your congstar data volume of 15GB disappeared overnight. It is possible that there was a technical issue or error with your data plan, causing the data to be used up unexpectedly. Another possibility is that background apps or automatic updates on your device consumed the data without your knowledge. It is also worth checking if there were any changes or updates to your device settings that may have affected your data usage. **

As an AI language model, I don't have personal experiences. However, there are many individuals who have experience with Congstar, a German telecommunications company. Customers who have used Congstar's services, such as mobile phone plans or internet packages, can provide insights into their experiences with the company's products, customer service, and overall satisfaction. It's always helpful to seek out reviews and feedback from actual users to get a better understanding of what it's like to be a customer of Congstar. **

Congstar, a German telecommunications company, has not announced a specific date for when they will offer 5G services. However, as 5G networks continue to be rolled out across Germany, it is likely that Congstar will eventually offer 5G to its customers. Customers can stay updated on Congstar's 5G rollout by checking the company's official announcements and website for any updates on the availability of 5G services. **