You can listen to the iPhone Morning Alarm Sound Effect (Annoying) on Asalh Love's SoundCloud.
The "annoying" iPhone morning alarm sound effect you are looking for is titled . iphone_morning_alarm_sound_effect_annoying_ios_...
It is engineered to be unpleasant to wake people up quickly and force them to interact with the device. You can listen to the iPhone Morning Alarm
If you are looking for the audio clip for editing or personal use, you can find it on various platforms: iphone_morning_alarm_sound_effect_annoying_ios_...
Several versions for editing are hosted on YouTube under titles like "iPhone 'Alarm' Ringtone (Apple Sound)".