cellular-network

I was recently asked to create an iOS app for a client which controls all other installed apps' access to cellular data. For instance, the user would be able to turn off cellular data access to all apps but Safari. I assumed that this wouldn't be possible because of sand-boxing but couldn't find any relevant info via Google or the developer's docs, so thought I'd ask the question here - is there a specific class or framework I should investigate? No you can't , Apple does not allow such approaches . So there is no helping class or framework at all. 来源： https://stackoverflow.com/questions

In iOS, I need to know the actual time (UTC), not the time of the device. In other words, it should not be possible for the user to tamper with the time or date. Anything that requires a network connection is not good (so accessing a time server is not an option). AFAIK, there are 2 theoretical ways of achieving this: Use the timestamp from the GPS satellite signal Get the current time from the carrier Problem is that this information is not exposed by any API in iOS. Is there another way? Most solutions you could possibly find (including getting GPS data from CoreLocation to access the time

I have a customer who has a device that has its own builtin wifi hot spot and he would like to connect it to an iPad 4G vie wifi and forward data at the same time through the cellular connection. Is this supported in IOS and if so can you point me to the appropriate documentation. Any suggestions are appreciated. Jim Comparing to Android, iOS supports simultaneous work of multiple network adapters. It's necessary to write C code working with BSD sockets, doing enum, bind, and handling network interface changes. By the way, it's ideologically very important to continue using that native BSD

Im on an application that receive data from server, the problem is when user connect to cellular data (Not 3G or WIFI ), it take ages to receive data. i had implemented this code from this Answer but im not sure if it is effective or not, sometimes it's giving me an accurate type, and sometimes it don't. here is my code: - (void)newtworkType { NSArray *subviews = [[[[UIApplication sharedApplication] valueForKey:@"statusBar"] valueForKey:@"foregroundView"]subviews]; NSNumber *dataNetworkItemView = nil; for (id subview in subviews) { if([subview isKindOfClass:[NSClassFromString(@