编辑“︁IPhone 4”︁（章节）

=== 連接性 ===
[[聯邦通信委員會]]（FCC）最近的文件跟史蒂夫·喬布斯於2010年的WWDC公布的事宜相反，報告顯示iPhone 4包含著一條[[多頻]][[3G]][[UMTS]]天線，並非蘋果公司宣傳的那款四頻3G UMTS無線電。根據蘋果公司提交予FCC的文件顯示，iPhone 4內的無線電支援800、850、900、1,900及2,100 MHz，而最常用於日本手機的800MHz頻率，沒有得到蘋果公司廣告的支持<ref name="engadget iP4 bands 1">{{cite web|url=https://www.engadget.com/2010/06/07/iphone-4-hits-fcc-becomes-worlds-second-announced-pentaband-3g/2|title=iPhone 4 hits FCC, becomes world's second announced pentaband 3G phone|first=Vlad|last=Savov|date=2010-06-07|publisher=Engadget|accessdate=2010-07-25|archiveurl=https://web.archive.org/web/20101224222421/http://www.engadget.com/2010/06/07/iphone-4-hits-fcc-becomes-worlds-second-announced-pentaband-3g/2|archivedate=2010-12-24|dead-url=no}}</ref>。然而，800MHz頻段是位於850MHz頻段的子集當中，這就解釋到為何裝置會被宣傳作四頻段。GSM版本的芯片組由{{le|思佳|Skyworks Solutions}}<ref name="chipworks iP4 teardown 1">{{cite web|url=http://www.chipworks.com/en/technical-competitive-analysis/resources/recent-teardowns/2010/06/silicon-teardown-of-the-apple-iphone-4-smart-phone|title=Teardown of the Apple iPhone 4 Smart Phone » Recent Teardowns|publisher=Chipworks|date=2010-06-23|accessdate=2011-08-30|archive-url=https://web.archive.org/web/20110820021559/http://www.chipworks.com/en/technical-competitive-analysis/resources/recent-teardowns/2010/06/silicon-teardown-of-the-apple-iphone-4-smart-phone|archive-date=2011-08-20|dead-url=yes}}</ref>及[[英飛凌]]生產。

iPhone 4跟當時大部分蘋果公司的流動產品一樣，其唯一的外部數據接端也是使用30針底座連接器。

iPhone 4是第一代擁有的第二個麥克風以[[靜音機|消除噪音的]]iPhone，其位於靠近耳機插孔的設備頂部，而主麥克風位於左下方<ref name="apple iP4 phone features 1">{{cite web|url=https://www.apple.com/iphone/features/phone.html|title=iPhone 4 – Learn about phone and voicemail features|publisher=Apple|date=|accessdate=2011-08-30|archive-date=2011-09-25|archive-url=https://web.archive.org/web/20110925212356/http://www.apple.com/iphone/features/phone.html|dead-url=no}}</ref>。