Apple is likely to report a dip in iPhone sales in the April-June quarter as shoppers held out for a new model in a slow economy, making it important for the company to detail how it is using artificial intelligence to augment growth, analysts said. The world’s most valuable firm will wrap up Big Tech earnings on Thursday, with a likely 1.6% drop in total quarterly revenue, according to Refinitiv – its steepest drop in third-quarter revenue since 2016. iPhone sales likely fell more than 2% in the period, according to 24 analysts polled by Visible Alpha, compared with a…