We are currently experiencing an issue that occurs only on iPhone 17 models. In our app, after connecting to an external device, users can download multiple video files stored on the device. When downloading several videos consecutively, the device consistently stops receiving responses midway through the process. As a result, no response is returned, and the connection between the app and the device is eventually lost. This issue does not occur on any iPhone models prior to iPhone 17. It is reproducible across all iPhone 17 devices within our company. This is a critical issue, and we need urgent assistance. The main error logs show two patterns: • Connection loss • Timeout At the OS level, the only error codes we receive are: • -1005 (Network connection lost) • -1001 (Request timed out) Unfortunately, we are unable to obtain more detailed error information beyond these codes, which makes further debugging difficult. We have attached the relevant logs below. We would greatly appreciate any guidance on how to further investigate or resolve this issue. 310.0 / :: 81 % ::: 251.21481481481482 310.0 / :: 82 % ::: 254.23280423280423 310.0 / :: 83 % ::: 257.3820105820106 310.0 / :: 84 % ::: 260.4 KeepAlive SEND id=423F1336-6239-4B3B-9414-5A987D85D564 at=2026-02-24T12:56:43Z timeout=60.000000s current: D20-Q2-PLUS, ssid: D20-Q2-PLUS_136a63 KeepAlive SKIP (in-flight) tcp_output [C10.1.1:3] flags=[R.] seq=4017430266, ack=4146413113, win=2048 state=CLOSED rcv_nxt=4146413113, snd_una=4017429847 nw_read_request_report [C10] Receive failed with error "Operation timed out" nw_flow_add_write_request [C10 192.168.000.0:443 failed parent-flow (satisfied (Path is satisfied), interface: en0[802.11], ipv4, dns, uses wifi, LQM: good)] cannot accept write requests nw_write_request_report [C10] Send failed with error "Socket is not connected" Task <5BDBE621-329A-45E9-B236-9C173E92A41F>.<7> HTTP load failed, 361/0 bytes (error code: -1005 [4:-4]) Task <5BDBE621-329A-45E9-B236-9C173E92A41F>.<7> finished with error [-1005] Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost." UserInfo={_kCFStreamErrorCodeKey=-4, NSUnderlyingError=0x13e632160 {Error Domain=kCFErrorDomainCFNetwork Code=-1005 "(null)" UserInfo={NSErrorPeerAddressKey=<CFData 0x14cfe5a90 [0x201746068]>{length = 16, capacity = 16, bytes = 0x100201bbc0a86f010000000000000000}, _kCFStreamErrorCodeKey=-4, _kCFStreamErrorDomainKey=4}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <5BDBE621-329A-45E9-B236-9C173E92A41F>.<7>, _NSURLErrorRelatedURLSessionTaskErrorKey=( "LocalDataTask <5BDBE621-329A-45E9-B236-9C173E92A41F>.<7>" ), NSLocalizedDescription=The network connection was lost., NSErrorFailingURLStringKey=https://192.168.000.0/keepalive, NSErrorFailingURLKey=https://192.168.000.0/keepalive, _kCFStreamErrorDomainKey=4} KeepAlive FAIL id=423F1336-6239-4B3B-9414-5A987D85D564 elapsed=29.203s status=-1 error=Optional(Alamofire.AFError.sessionTaskFailed(error: Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost." UserInfo={_kCFStreamErrorCodeKey=-4, NSUnderlyingError=0x13e632160 {Error Domain=kCFErrorDomainCFNetwork Code=-1005 "(null)" UserInfo={NSErrorPeerAddressKey=<CFData 0x14cfe5a90 [0x201746068]>{length = 16, capacity = 16, bytes = 0x100201bbc0a86f010000000000000000}, _kCFStreamErrorCodeKey=-4, _kCFStreamErrorDomainKey=4}}, ), NSLocalizedDescription=The network connection was lost., KeepAlive FAIL 1001 Log KeepAlive SEND id=FC433405-C1F7-47EF-AF9E-D12E67B071FA at=2026-02-24T12:22:38Z timeout=60.000000s current: D20-Q2-PLUS, ssid: VUEROID_D20-Q2-PLUS_136a63 KeepAlive FAIL id=FC433405-C1F7-47EF-AF9E-D12E67B071FA elapsed=7.834s status=-1 error=Optional(Alamofire.AFError.sessionTaskFailed(error: Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo={_kCFStreamErrorCodeKey=60, NSUnderlyingError=0x135e612f0 {Error Domain=kCFErrorDomainCFNetwork Code=-1001 "(null)" UserInfo={_NSURLErrorNWPathKey=satisfied (Path is satisfied), viable, interface: en0[802.11], ipv4, dns, uses wifi, LQM: good, _kCFStreamErrorCodeKey=60, _kCFStreamErrorDomainKey=1}}, ), NSLocalizedDescription=The request timed out., NSErrorFailingURLKey=https://192.168.000.0/keepalive, _kCFStreamErrorDomainKey=1})) KeepAlive FAIL ignored count=1 error=Server error : Optional(Alamofire.AFError.sessionTaskFailed(error: Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo={_kCFStreamErrorCodeKey=60, KeepAlive SEND id=A64AE4C0-28B4-41E3-AAC9-422C41D99D15 at=2026-02-24T12:22:58Z timeout=60.000000s KeepAlive FAIL id=110B96DA-4D88-45E0-B8F7-D0A9798593AE elapsed=43.605s status=-1 error=Optional(Alamofire.AFError.sessionTaskFailed(error: Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost." UserInfo={_kCFStreamErrorCodeKey=-4, NSUnderlyingError=0x135e60f60 {Error Domain=kCFErrorDomainCFNetwork Code=-1005 "(null)" UserInfo={NSErrorPeerAddressKey=<CFData 0x144dfee40 [0x201746068]>{length = 16, capacity = 16, bytes = 0x100201bbc0a86f010000000000000000}, _kCFStreamErrorCodeKey=-4, _kCFStreamErrorDomainKey=4}}, ), NSLocalizedDescription=The network connection was lost., NSErrorFailingURLStringKey=https://192.168.000.0/keepalive, NSErrorFailingURLKey=https://192.168.000.0/keepalive, _kCFStreamErrorDomainKey=4})) KeepAlive FAIL ignored count=2 error=Server error : Optional(Alamofire.AFError.sessionTaskFailed(error: Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost." UserInfo={_kCFStreamErrorCodeKey=-4, NSUnderlyingError=0x135e60f60 {Error Domain=kCFErrorDomainCFNetwork Code=-1005 "(null)" UserInfo={NSErrorPeerAddressKey=<CFData 0x144dfee40 [0x201746068]>{length = 16, capacity = 16, bytes = 0x100201bbc0a86f010000000000000000}, _kCFStreamErrorCodeKey=-4, _kCFStreamErrorDomainKey=4}}, Network type changed, hasWiFiInterface :false We are sending a keepalive request every 30 seconds to maintain the connection state with the device. Most of the issues occur during this keepalive process, and this is when the logs mentioned earlier are generated. Based on our debugging so far, the keepalive function itself is being called as expected. However, the execution appears to stall while waiting for a response from the device. After remaining in that state for some time, the session eventually ends with either a timeout or a connection loss error. We are use almofire 4.0.1. According to the firmware developer, when this issue occurs, there are no corresponding values or logs received on the device side. Therefore, we are currently investigating whether this might be related to a networking issue on the iPhone side. All other features are functioning normally. The problem occurs only when downloading VOD video files, and the reproduction rate is 100% under that condition.

Hi. I made an app for iphone in Xcode 13.2. I set the minimum supported OS to 11.0 and there was no problem when compiling. However, I recently tested it on an iPhone 6 with iOS 12.4, and the app crashed as soon as it started. When debugging, the following message is output, but I do not know why this problem occurred. Has anyone solved the same issue in this regard? If yes, how did you solve it? Here is the debugging message I saw dyld: Symbol not found: _OBJC_CLASS_$_UIPointerInteraction Referenced from: /var/containers/Bundle/Application/"AppID"/Myapp.app/Myapp Expected in: /System/Library/Frameworks/UiKit.framework/UIKit in /var/containers/Bundle/Application/"AppID"/Myapp.app/Myapp P.s. My app is for iPhone only. So I disabled both iPad and Mac support settings in the targets deployment info. PS 2. When I searched for UIPointerInteraction in my code, there was no result. Of course I didn't even use it. I am eagerly awaiting your reply. Thanks.