Criminals are exploiting the trust that young iPhone users have in the device’s built-in message platform to make relentless demands for money. WSJ family and tech columnist Julie Jargon reports on the tragic results of those scams, and what parents need to know. Plus: Artificial intelligence companies have been the leading backers of technologies like solar energy and battery storage. Now, WSJ tech and crypto reporter Amrith Ramkumar reports those firms are trying to convince Congress to leave their clean-energy tax credits alone.

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