just curious - if they went through the process of providing sealable bags and (I assume) verifying the bags were in fact sealed - why not go one step further and require the sealed phones to all be placed in a bucket which could then be taken to another room to ensure no access, and also no interruptions during the exam from a rogue ring or alarm?
And who's liable if I pay a testing center to properly administer an important test that will heavily impact my future, and during such test a phone rings, another phone's alarm goes off, and another phone gets a series of audio notifications? - when the center could have simply taken all the phones to a another location until the conclusion of the test.