It did take more than 24 hours, however, it was worth the wait. The instructions were simple enough that it worked the first time tried. The unlock code worked. Boostmobile had sent perhaps ten sets of PUK codes, none of which worked. After a month giving Boost more chances, A.I. GPT chat pointed me to eight companies, Most were scams, and very misleading. One led to a fraud VISA charge to deal with. Doctor Sim appears to be multi-national, multi-lingual, however for us in the USA held hostage by BoostMobile, this was a God-Send, a wonderfully helpful service, which now I trust.