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How to Optimize Your SIM Card's 4G Network & Signal?

Why AIO-6 LTE 4G signal can be weak, and the step-by-step process to request a network optimization.

If you experience weak 4G signal, unstable connection, or lagging remote features, it is often not a hardware defect. Instead, it is usually related to the local network coverage.

๐Ÿ“– Why is the signal weak?

Mobile network environments vary greatly across the globe. By default, our devices connect to networks based on a pre-set Priority List (PLMN). However, in certain areas, the default Operator A might have poor coverage, while Operator B is much stronger.

To solve this, we offer a Remote Network Optimization Service. Our technical team can manually adjust your device's priority settings to "switch" and lock onto the best performing carrier in your specific location.


๐Ÿ›  Signal Optimization Process (Step-by-Step)

If you feel your connectivity needs improvement, please follow these simple steps:

Step 1: Check Your Status

Note down your current situation:

  • Your current Country and City.

  • Is the issue persistent, or does it only happen in specific areas?

Step 2: Identify the Best Local Network

Based on your smartphone experience or local knowledge: Which operator provides the most stable signal and fastest data in your current area?

Step 3: Submit an Optimization Request

Send the following information to CHIGEE Technical Support for remote intervention:

๐Ÿ“Œ Optimization Request Template:

  • SN Code: (Found in Settings -> About)

  • Country/City

  • Problem Description: (e.g., 1-bar signal, unable to connect to 4G live stream)

  • The current operator the device is connected to: (if known)

  • Suggested Operator: (Select from the Full Operator Table below)
    โ€‹Note: Available operators for switching are listed in the table below. If no alternative operator is provided for your region, this optimization method is not applicable.

Step 4: Remote Adjustment

Our team will remotely update your device's PLMN priority and trigger a network re-scan.

Step 5: Verify the Result

After processing , please check if the signal has improved and the network connection is stable.

If there is no improvement, please provide feedback so we can further optimize the process.


๐Ÿ“– Overview of Applicable Scenarios

Weak/Unstable Signal: The signal icon on the screen consistently displays only 1-2 bars of signal strength.

Function Delay: Remote anti-theft or 4G Live functions operate unsmoothly.

Regional Differences: The device functions well in "Location A," but performs poorly in "Location B."


๐ŸŒ Global Operator Reference Table (Full List)

Country

Network Operators

๐Ÿ‡ฆ๐Ÿ‡น Austria

Mobilkom Austria AG; Hutchison Drei Austria GmbH

๐Ÿ‡ฆ๐Ÿ‡ฟ Azerbaijan

Azercell Telekom MMC; Bakcell Llc

๐Ÿ‡ง๐Ÿ‡ช Belgium

Proximus-- Societe Anonyme de Droit Public(mobile)

๐Ÿ‡ง๐Ÿ‡ฌ Bulgaria

Mobiltel EAD; Telenor Bulgaria EAD

๐Ÿ‡ญ๐Ÿ‡ท Croatia

Vipnet; TELE2

๐Ÿ‡จ๐Ÿ‡พ Cyprus

MTN Cyprus; Cyprus Telecommunications Authority

๐Ÿ‡จ๐Ÿ‡ฟ Czech Republic

Vodafone Czech Republic-- a.s.; O2 Czech Republic a.s.

๐Ÿ‡ฉ๐Ÿ‡ฐ Denmark

Hi3G; TDC A/S

๐Ÿ‡ช๐Ÿ‡ช Estonia

Estonia EMT; Tele2 Eesti AS

๐Ÿ‡ซ๐Ÿ‡ฎ Finland

Alands Telekommunikation Ab; Elisa Oyj; Telia Carrier Finland Oy

๐Ÿ‡ซ๐Ÿ‡ท France

Free Mobile SAS; SFR sa; Orange; BOUYGUES TELECOM

๐Ÿ‡ฉ๐Ÿ‡ช Germany

Telefonica Germany GmbH & Co. OHG; Vodafone GmbH

๐Ÿ‡ฌ๐Ÿ‡ท Greece

Wind Hellas Telecommunications sa; Vodafone Panafon

๐Ÿ‡ญ๐Ÿ‡บ Hungary

Pannon GSM; Vodafone

๐Ÿ‡ฎ๐Ÿ‡ธ Iceland

Siminn hf.; Syn hf

๐Ÿ‡ฎ๐Ÿ‡ช Ireland

Meteor Mobile Communications Ltd.; Hutchison 3G Ireland Ltd

๐Ÿ‡ฎ๐Ÿ‡น Italy

Wind Tre S.p.A.; Vodafone Italia S.p.A; Iliad Italia S.p.A

๐Ÿ‡ฑ๐Ÿ‡ป Latvia

SIA Tele2; BITE Latvija SIA; Latvijas Mobilais Telefons

๐Ÿ‡ฑ๐Ÿ‡ฎ Liechtenstein

Mobilkom; Salt (Liechtenstein) AG

๐Ÿ‡ฑ๐Ÿ‡น Lithuania

Tele2 UAB; Telia Lietuva AB; UAB Bite Lietuva

๐Ÿ‡ฑ๐Ÿ‡บ Luxembourg

POST Luxembourg; Tango SA

๐Ÿ‡ฒ๐Ÿ‡น Malta

Vodafone Malta Ltd.; GO MOBILE Communication

๐Ÿ‡ณ๐Ÿ‡ฑ Netherlands

KPN Mobile BV; Vodafone Libertel BV

๐Ÿ‡ณ๐Ÿ‡ด Norway

TeliaSonera Norge AS; TELENOR Global Services AS

๐Ÿ‡ต๐Ÿ‡ฑ Poland

Orange Polska S.A.; Polkomtel SP. Z O.O.; P4 Sp. Z.o.o

๐Ÿ‡ต๐Ÿ‡น Portugal

NOS Comunicacoes sa; MEO - Servicos de Comunicacoes

๐Ÿ‡ท๐Ÿ‡ช Reunion

Orange Reunion; Societe Reunionnaise du Radiotelephone

๐Ÿ‡ท๐Ÿ‡ด Romania

Vodafone Romania SA; Orange Romania SA

๐Ÿ‡ธ๐Ÿ‡ฐ Slovakia

O2 Slovakia-- s.r.o.; Orange Slovensko

๐Ÿ‡ธ๐Ÿ‡ฎ Slovenia

Telemach; Mobitel

๐Ÿ‡ช๐Ÿ‡ธ Spain

Vodafone Espana; Orange Espagne; Telefonica; Xfera Moviles

๐Ÿ‡ธ๐Ÿ‡ช Sweden

Tele2 Sverige AB; Telia Sonera Mobile Networks AB; Telenor Sverige AB

๐Ÿ‡จ๐Ÿ‡ญ Switzerland

Salt Mobile SA; Sunrise Communications AG

๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom

Vodafone Ltd.; Hutchison 3G UK Ltd; 3

๐Ÿ‡ฏ๐Ÿ‡ต Japan

NTT DOCOMO; Softbank Corp

๐Ÿ‡ฆ๐Ÿ‡ท Argentina

Movistar

๐Ÿ‡จ๐Ÿ‡ฑ Chile

Telefonica Movil; Entel PCS Telecomunicaciones S.A

๐Ÿ‡จ๐Ÿ‡ด Colombia

Orbitel Servicios Internacionales S.A.S; COLOMBIA TELECOMUNICACIONES

๐Ÿ‡จ๐Ÿ‡ท Costa Rica

Instituto Costarricense de Electricidad; TELEFONICA

๐Ÿ‡ช๐Ÿ‡จ Ecuador

OTECEL S.A

๐Ÿ‡ธ๐Ÿ‡ป El Salvador

El Salvador Telefonica

๐Ÿ‡ต๐Ÿ‡ช Peru

Telefonica del Peru S.A

๐Ÿ‡ป๐Ÿ‡ช Venezuela

Venezuela TELCEL

๐Ÿ‡ฌ๐Ÿ‡ซ French Guiana

Outremer Telecom; Digicel Mobile Antilles

๐Ÿ‡ฆ๐Ÿ‡บ Australia

YES OPTUS; Telstra MobileNet

๐Ÿ‡จ๐Ÿ‡ฆ Canada

Bell Mobility; Rogers Wireless Inc; TELUS Communications

๐Ÿ‡บ๐Ÿ‡ธ United States

Verizon Wireless; AT&T; T-Mobile USA

๐Ÿ‡จ๐Ÿ‡ณ China

China Telecom; CHINA MOBILE; CHINA UNICOM GSM

๐Ÿ‡ญ๐Ÿ‡ฐ Hong Kong

CSL

๐Ÿ‡ฎ๐Ÿ‡ณ India

IDEA Cellular; Vodafone

๐Ÿ‡ฎ๐Ÿ‡ฉ Indonesia

TELKOMSEL

๐Ÿ‡ฒ๐Ÿ‡พ Malaysia

Maxis; DTAC

๐Ÿ‡ฒ๐Ÿ‡ด Macao

CTM

๐Ÿ‡ณ๐Ÿ‡ฌ Nigeria

Airtel Nigeria; Glo Mobile

๐Ÿ‡ต๐Ÿ‡ญ Philippines

Globe Telecom; SMART Gold

๐Ÿ‡ธ๐Ÿ‡ฌ Singapore

SingTel; StarHub

๐Ÿ‡น๐Ÿ‡ญ Thailand

AIS GSM; DTAC

๐Ÿ‡ป๐Ÿ‡ณ Vietnam

Hanoi Telecom Joint Stock Company; Mobifone

๐Ÿ‡น๐Ÿ‡ท Turkey

Turkcell Iletisim Hizmetleri; Vodafone Turkey

๐Ÿ‡ท๐Ÿ‡บ Russia

MTS; Beeline

๐Ÿ‡ธ๐Ÿ‡ฆ Saudi Arabia

Mobily

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