載波聚合CA：結合頻寬以提高網路傳輸效率
載波聚合技術便是讓零碎、分散的頻寬能有效的被利用，它能夠將連續或不連續的頻寬整合，藉此提高傳輸效率與網路速度。 再以高速公路和車流比喻的話，載波聚合技術讓車流能夠行駛上零散在各處的狹窄車道，提高網路傳輸效率。
根據該理論？組網數量越多，速度越快！就好似【BT torrent 種子傳輸】，用戶越多傳輸速度越快，實際能達到 2CA 的手機，卻沒有幾款，使得大家認為【 4G 也是假的 】。
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5G組網方式 NSA SA
NSA及SA是5G的兩種組網類型，單就字面意義上來說，NSA即為Non-Standalone，非獨立組網；
SA則為Standalone，獨立組網。NSA是4G和5G基地台並存，其優勢在於初期所需要投入的資源成本較低，但傳輸速率受限；而SA則是建置新的5G基地台，核心網路使用5G架構，不再依賴4G，傳輸速率不受限制。
vivo品牌 撥號輸入 *#*#7777#*#* 可驗證 4G 步驟
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個人評語【 CA \ NSA \ SA 】：
目前國內 2CA 3CA 4CA 5CA 6CA 都是 不存在的！不管是中華電信，還是哪一家廠商，手機預設 CA 未開啟，你用 Phone Number 撥號開啟 CA 功能，電信公司基地台未必支援。
回過頭看 3G 網路【 HSDPA, HSUPA, WCDMA 】都是 128 bit/sec 傳輸效率，進行【 壓縮傳輸 加密傳輸 】的情況下，可達到【230MB】以上傳輸率。
故而【 4G LTE 】是什麼意思？那只是【單點 傳輸 最大值】的效益，並不代表支援【 4G CA 功能】。
因此？所謂 4G / 5G 只是【 蜂窩狀 電信 網路 】的實現模式，若要說發揮出【 4G / 5G 】的安全規格？那就很慘淡！因為【加密單元】【電信波】【傳輸量】【定位磁場】【功能驗證】需要【複合系統】也就是【有多個不同基地台 負責不同功能 主基地台 負責【分配電信波段、加密單元】多個 子基地台 負責【傳輸量、定位檢查】，整體來講？
【 IEEE電信網路實驗 】至今為止？一切都源於【蜂窩狀網路 的 實現技術】。
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以下是網路上找到 關於【標準 4G 電信服務 手機代碼表】
General Mobile secret codes / UUID Code / Phone Number Code
*#06# - IMEI (International Mobile Equipment Identity) number
ANDROID General Mobile secret codes for General Mobile 4G
*#*#4636#*#* - Display information about Phone, Battery and Usage statistics. 4 menus will appear on the phone screen: (Phone information, Battery information, Battery history, Usage statistics)
*#*#225#*#* - Calendar Storage, show the number events in your calendar
*#*#426#*#* - Check the connectivity between the FCM server and the mobile devices
*#*#759#*#* - Access Google partner setup (RLZ debug Interface)
*#*#36245#*#* - Email debug information
*#*#8255#*#* - This code can be used to launch Google Talk Service Monitor
*#*#64663#*#* - Check Hardware (Version, Sensors, Battery, Radio, Speakers)
*#2886# - Factory Auto Testing
*#*#273282*255*663282*#*#* OR *#*#273283*255*663282*#*#* - Create backup to all media files
*#*#7780#*#* - Android factory reset code. It'll remove following things: (Downloaded applications, Google account, all data and settings)
*2767*3855# - This code is used for factory format.
*#*#7594#*#* - Change the "End Call / Power" button action in your phone.
*#*#34971539#*#* - General Mobile 4G Camera Information.
*#*#97#*#* - Language and Keyboard settings in General Mobile 4G
*#872564# - USB logging control
*#301279# - HSDPA/HSUPA Control Menu
*#9900# - System dump mode General Mobile 4G
*#*#46*#*# - Reset Sim in General Mobile 4G
*#*#197328640#*#* - Enter service mode to run various tests and change settings
WLAN, GPS and Bluetooth Test Codes:
*#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#* - WLAN test (Use "Menu" button to start various tests)
*#*#232338#*#* - Shows WiFi MAC address
*#*#1472365#*#* - Run GPS test
*#*#1575#*#* - For a more advanced GPS test
*#*#232331#*#* - Bluetooth test
*#*#232337#*# - Shows Bluetooth device address in General Mobile 4G
GSM codes for General Mobile 4G
Change PIN code - **04* and enter the old PIN code, and twice a new PIN code.
Change PIN2 code - **042* and enter the old PIN2 code, and twice the new PIN2 code.
Unlock SIM (PIN) - **05* and enter the PUK code and new PIN code twice
Unlock SIM (PIN2) - **052* and enter the PUK2 code and new PIN2 code twice
Call Forwarding (you have to order the service from the operator)
##002# Cancel all diverts
##004# Cancel all conditional call forwarding
**004* phone number # Activate all conditional call forwarding
Unconditional call forwarding (Call Forward All)
###21 Switch off and deactivate
#21# Deactivate
**21*phone number# Enable and Activate
*21# Activate
*#21# Check the condition
Diversion in case of "no answer"
###61 Switch off and deactivate
#61# Deactivate
**61* phone number# Enable and Activate
*61# Activate
*#61# Check the condition
Diversion in case of "not available"
### 62 Switch off and deactivate
# 62 # Deactivate
** 62 *phone number# Enable and Activate
* 62 # Activate
* # 62 # Check the condition
Diversion in case of "busy"
###67 Switch off and deactivate
#67# Deactivate
**67*phone number# Enable and Activate
*67# Activate
*#67# Check the condition
Call Barring (you have to order the service from the operator)
Change the password for all bans (default - 0000)
- ** 03 * 330 * old password * new password * new password #
Block outgoing calls
*33*(enter password)# - Activation
#33*(enter password)# - Deactivation
*#33# - Check Status
How to turn off all calls
*330*(enter password)# - Activation
#330*(enter password)# - Deactivation
*#330# - Check Status
How to bar all outgoing international calls
*331*(enter password)# - Activation
#331*(enter password)# - Deactivation
*#331# - Check Status
Blocking of all outgoing international calls when roaming
*332*(enter password)# - Activation
#332*(enter password)# - Deactivation
*#332# - Check Status
Block all outgoing calls on your phone
*333*(enter password)# - Activation
#333*(enter password)# - Deactivation
*#333# - Check Status
Block incoming calls
*353*(enter password)# - Activation
#353*(enter password)# - Deactivation
*#353# - Check Status
How to turn off all incoming calls when roaming
*351*(enter password)# - Activation
#351*(enter password)# - Deactivation
*#351# - Check Status
Call waiting (you have to order the service from the operator)
*43# - Activation
#43# - Deactivation
*#43# - Check Status
Transfer your phone number (Anti ANI)
#30#phone number - Block
*30#phone number - Allow
*#30# - Check Status
Show phone number of the caller you (ANI)
#77# - Block
*77# - Allow
*#77# - Check Status
https://mobilespecs.net/phone/codes/General_Mobile/General_Mobile_4G.html
https://docs.fortinet.com/document/fortigate/6.2.0/cookbook/862747/direct-ip-support-for-lte-4g
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