iPhone 17 Specs Leak: Full KT Telecom Details, Pricing, and Which Model to Choose

Hours before Apple's "Awe Dropping" event on September 9, 2025, South Korea's KT Telecom has accidentally revealed comprehensive specifications for all four iPhone 17 models through an internal document. The leak provides the most detailed preview of Apple's 2025 iPhone strategy, showcasing significant upgrades across the entire lineup including the introduction of the ultra-thin iPhone 17 Air.

iPhone 17 Complete Specifications Overview

Universal Upgrades Across All Models

The Korean carrier leak reveals several improvements that benefit every iPhone 17 model. Most notably, all devices now feature 120Hz ProMotion displays with LTPO OLED technology, eliminating the previous distinction between standard and Pro models. This means smoother scrolling, better responsiveness, and improved battery efficiency regardless of which iPhone 17 you choose.

Every model also receives a significant front camera upgrade to 24MP with a six-element lens system, doubling the resolution from the 12MP selfie cameras Apple has used for years. This enhancement promises dramatically better selfie quality and video calling performance across the entire lineup.

Memory configurations see substantial improvements, with base models now including 8GB of RAM (up from 6GB), while Pro models feature 12GB of RAM. This increased memory supports enhanced Apple Intelligence features and delivers better multitasking performance.

iPhone 17: Premium Features at Base Price

The standard iPhone 17 represents exceptional value by bringing previously Pro-exclusive features to the entry-level model. The 6.3-inch display with 120Hz ProMotion makes everyday interactions feel incredibly smooth, while the Apple A19 chip with 8GB RAM ensures top-tier performance.

The camera system maintains the proven 48MP main + 12MP ultrawide configuration from the iPhone 16, but adds the upgraded 24MP front camera. Battery capacity increases to 3,600mAh for improved all-day usage.

Starting at $900, the iPhone 17 makes premium display technology and enhanced performance more accessible than ever before. Color options include Black, White, Lime, and Red.

iPhone 17 Air: Revolutionary Ultra-Thin Design

The most intriguing addition is the iPhone 17 Air, measuring just 5.5mm thick while featuring a large 6.6-inch display. At approximately 145 grams, it's significantly lighter than previous iPhones, targeting users who prioritize portability and style.

Design Trade-offs for Thinness:

• Single 48MP rear camera (no ultrawide or telephoto)

• Compact 2,800mAh battery for all-day use concerns

• eSIM-only design due to space constraints

• Apple's custom C1 modem instead of Qualcomm

Despite these compromises, the iPhone 17 Air delivers the same A19 performance and 120Hz ProMotion display as the standard model. Starting at $1,000, it appeals to users who value design innovation over maximum functionality.

Professional Models: iPhone 17 Pro and Pro Max

Enhanced Camera System

Both Pro models feature Apple's first triple 48MP camera system, with all three rear cameras using high-resolution sensors. The telephoto lens supports 8x optical zoom (upgraded from 5x on iPhone 16 Pro), while the ultrawide camera gains 48MP resolution for dramatically improved detail.

Professional Camera Features:

• 8K video recording at 30fps

• 4K video at 120fps for ultra-smooth slow motion

• Enhanced computational photography with 12GB RAM

• All 48MP rear camera configuration

Advanced Cooling Technology

The Pro models introduce vapor chamber cooling systems for the first time in iPhones, allowing sustained peak performance during intensive tasks like gaming and ProRes video recording. This thermal management technology, combined with aluminum unibody chassis design, helps the A19 Pro chip maintain optimal performance longer.

Performance Leadership

The Apple A19 Pro chip features 8 CPU cores (versus 6 in the A19) and delivers 18% better performance than the A18 Pro. Early benchmarks suggest single-core scores exceeding 4,000 points and multi-core performance above 10,000 points.

Pro Model Specifications:

• iPhone 17 Pro: 6.3-inch display, 3,700mAh battery, starting at $1,116

• iPhone 17 Pro Max: 6.9-inch display, 5,000mAh battery, starting at $1,397

The Pro Max's 5,000mAh battery represents the largest ever in an iPhone, promising 25-30% longer battery life than the iPhone 16 Pro Max.

Performance Comparison: A19 vs A19 Pro

Availability and Pricing Strategy

The leaked specifications suggest Apple is positioning the iPhone 17 lineup as its most significant update in recent years. Pre-orders begin September 12 with general availability starting September 19, 2025.

Key Pricing Points:

• iPhone 17: $900 (competitive with Android flagships)

• iPhone 17 Air: $1,000 (premium for design innovation)

• iPhone 17 Pro: $1,116 (professional features)

• iPhone 17 Pro Max: $1,397 (ultimate iPhone experience)

Which iPhone 17 Should You Choose?

Choose iPhone 17 if: You want premium features like 120Hz ProMotion and excellent cameras at the most affordable price point.

Choose iPhone 17 Air if: You prioritize ultra-portable design and don't mind sacrificing camera versatility and battery life.

Choose iPhone 17 Pro if: You need professional camera features like 8K recording and enhanced zoom in a manageable size.

Choose iPhone 17 Pro Max if: You want maximum battery life, the largest display, and most advanced features available.

The Korean carrier leak provides unprecedented insight into Apple's 2025 iPhone strategy, revealing a lineup that brings premium features to more price points while introducing genuine design innovation with the ultra-thin Air model. With universal 120Hz displays and significant camera improvements across all models, the iPhone 17 series represents Apple's most compelling iPhone update in years.