Apple has issued an urgent update for its products.
Both iPhone and iPad users were urged to update their products to fix issues in the JavaScriptCore and WebKit.
To update your iPhone, connect to Wifi, and go to settings. After that, click on General and then Software Update. If there is an update available, it will tell you. Download the update and install.
The updates should help people with malicious materials, but it hasn’t been met with rave reviews.
The biggest problem so far, according to Reddit users, is the update is draining battery. Apple is aware and they have a fix.
Apple has offered the following advice in fixing your phone, if you’re having battery problems after the update.
While losing battery life can be a big issue, users have found some good things about the updates. 
One change is the display. People seem very happy with the new display, which makes the icons on your phone more prominent. 
The latest update is slated to help your iPhone perform better. It should also help with any bugs that have popped up on many apps. The update will also help with compatibility, allowing users to use new programs.
According to Apple, “You can use the Messages app on your iPhone, iPad, Mac, Apple Watch, or Apple Vision Pro to send messages. Those messages are sent as iMessage, RCS, or SMS/MMS. Learn more about the difference between the message types.
“iMessages can be sent to another iPhone or another Apple device over Wi-Fi or cellular-data networks,” Apple says on its website. “With iMessage, you can send texts, high resolution photos and videos, documents, links, Tapbacks, text effects, Live Stickers, message effects, and more. iMessage supports delivery and read receipts and typing indicators. iMessages appear in blue text bubbles on your device.
“When you use iMessage, your conversations are encrypted end-to-end, so they can’t be read while they’re sent between devices.
“If you aren’t using iMessage, you can use RCS. RCS text messages can be sent to non-Apple devices as well as another iPhone or another Apple device with Text Message Forwarding turned on,” the site says. “With RCS, you can send texts, high resolution photos and videos, links, and more. RCS also supports delivery and read receipts and typing indicators. RCS messages appear in green text bubbles on your device.
“Apple’s implementation of RCS is based on the industry’s standard. RCS messages aren’t end-to-end encrypted, which means they’re not protected from a third-party reading them while they’re sent between devices.
“RCS is a carrier-provided service. When your device connects to your cellular network, it communicates with your carrier and their partners to set up RCS. User identifiers are exchanged for your carrier and their partners to authenticate your device and provide a connection. These identifiers could include but are not limited to your IMEI, IMSI, current IP address, and phone number. Your current IP address might also be shared with other RCS users.
“To use RCS, you need iOS 18 and a text-messaging plan from a carrier that supports RCS on iPhone. Contact your wireless carrier for more information.
“To turn RCS on or off, go to Settings > Apps > Messages > RCS Messaging.”
“If you aren’t using iMessage or RCS, you can use SMS/MMS. SMS and MMS text messages can be sent to non-Apple devices as well as another iPhone or another Apple device with Text Message Forwarding turned on,” Apple says. “With SMS/MMS, you can send texts, photos and videos, links, and more. SMS/MMS messages appear in green text bubbles on your device.
“SMS/MMS messages aren’t end-to-end encrypted, which means they’re not protected from a third-party reading them while they’re sent between devices.
“SMS and MMS are carrier-provided services. When your device connects to your cellular network, it communicates with your carrier. User identifiers are exchanged for your carrier to authenticate your device. These identifiers could include but are not limited to your IMEI, IMSI, current IP address, and phone number.
“To use SMS/MMS on an iPhone, you need a text-messaging plan that supports these services.”

source