show image of contact in formula field in contact detail page(image is stored in notes and attachments) whenever image is saved /changed/multiple image(only customisation - no coding) is stored(takes only first image)

Folks, if you want to bring bugs or feature requests to the attention of the Salesforce Mobile SDK team, the most direct route is to submit an issue in github at the appropriate site, ie:

https://github.com/forcedotcom/SalesforceMobileSDK-iOS/issues

https://github.com/forcedotcom/SalesforceMobileSDK-Android/issues

We use github every day and can quickly triage bugs in that forum.   You can also submit your code contributions in a pull request on github for inclusion in the Mobile SDK. 

However, if you just have questions about using the Mobile SDK, please continue to use this discussion board for that.